diff --git a/Gruntfile.coffee b/Gruntfile.coffee
index b57f5db..cd2e86f 100644
--- a/Gruntfile.coffee
+++ b/Gruntfile.coffee
@@ -46,16 +46,6 @@ module.exports = (grunt) ->
           'test/**/*.spec.js'
         ]
 
-    karma:
-      client:
-        configFile: 'karma.conf.js'
-        autoWatch: false
-        singleRun: true
-      tdd:
-        configFile: 'karma.conf.js'
-        autoWatch: true
-        singleRun: false
-
     'npm-contributors':
       options:
         commitMessage: 'chore: update contributors'
@@ -68,12 +58,11 @@ module.exports = (grunt) ->
   grunt.loadNpmTasks 'grunt-auto-release'
   grunt.loadNpmTasks 'grunt-contrib-jshint'
   grunt.loadNpmTasks 'grunt-bump'
-  grunt.loadNpmTasks 'grunt-karma'
   grunt.loadNpmTasks 'grunt-npm'
   grunt.loadNpmTasks 'grunt-simple-mocha'
 
   grunt.registerTask 'default', ['jshint', 'test']
-  grunt.registerTask 'test', ['karma:client', 'simplemocha:unit']
+  grunt.registerTask 'test', ['simplemocha:unit']
   grunt.registerTask 'release', 'Bump and publish to NPM.', (type) ->
     grunt.task.run [
       'npm-contributors'
diff --git a/e2e-test/base.js b/e2e-test/base.js
deleted file mode 100644
index b325eb1..0000000
--- a/e2e-test/base.js
+++ /dev/null
@@ -1,2455 +0,0 @@
-// Copyright 2006 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Bootstrap for the Google JS Library (Closure).
- *
- * In uncompiled mode base.js will write out Closure's deps file, unless the
- * global <code>CLOSURE_NO_DEPS</code> is set to true.  This allows projects to
- * include their own deps file(s) from different locations.
- *
- * @author pupius@google.com (Dan Pupius)
- * @author arv@google.com (Erik Arvidsson)
- *
- * @provideGoog
- */
-
-
-/**
- * @define {boolean} Overridden to true by the compiler when --closure_pass
- *     or --mark_as_compiled is specified.
- */
-var COMPILED = false;
-
-
-/**
- * Base namespace for the Closure library.  Checks to see goog is already
- * defined in the current scope before assigning to prevent clobbering if
- * base.js is loaded more than once.
- *
- * @const
- */
-var goog = goog || {};
-
-
-/**
- * Reference to the global context.  In most cases this will be 'window'.
- */
-goog.global = this;
-
-
-/**
- * A hook for overriding the define values in uncompiled mode.
- *
- * In uncompiled mode, {@code CLOSURE_UNCOMPILED_DEFINES} may be defined before
- * loading base.js.  If a key is defined in {@code CLOSURE_UNCOMPILED_DEFINES},
- * {@code goog.define} will use the value instead of the default value.  This
- * allows flags to be overwritten without compilation (this is normally
- * accomplished with the compiler's "define" flag).
- *
- * Example:
- * <pre>
- *   var CLOSURE_UNCOMPILED_DEFINES = {'goog.DEBUG': false};
- * </pre>
- *
- * @type {Object.<string, (string|number|boolean)>|undefined}
- */
-goog.global.CLOSURE_UNCOMPILED_DEFINES;
-
-
-/**
- * A hook for overriding the define values in uncompiled or compiled mode,
- * like CLOSURE_UNCOMPILED_DEFINES but effective in compiled code.  In
- * uncompiled code CLOSURE_UNCOMPILED_DEFINES takes precedence.
- *
- * Also unlike CLOSURE_UNCOMPILED_DEFINES the values must be number, boolean or
- * string literals or the compiler will emit an error.
- *
- * While any @define value may be set, only those set with goog.define will be
- * effective for uncompiled code.
- *
- * Example:
- * <pre>
- *   var CLOSURE_DEFINES = {'goog.DEBUG': false};
- * </pre>
- *
- * @type {Object.<string, (string|number|boolean)>|undefined}
- */
-goog.global.CLOSURE_DEFINES;
-
-
-/**
- * Returns true if the specified value is not undefined.
- * WARNING: Do not use this to test if an object has a property. Use the in
- * operator instead.
- *
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is defined.
- */
-goog.isDef = function(val) {
-  // void 0 always evaluates to undefined and hence we do not need to depend on
-  // the definition of the global variable named 'undefined'.
-  return val !== void 0;
-};
-
-
-/**
- * Builds an object structure for the provided namespace path, ensuring that
- * names that already exist are not overwritten. For example:
- * "a.b.c" -> a = {};a.b={};a.b.c={};
- * Used by goog.provide and goog.exportSymbol.
- * @param {string} name name of the object that this file defines.
- * @param {*=} opt_object the object to expose at the end of the path.
- * @param {Object=} opt_objectToExportTo The object to add the path to; default
- *     is |goog.global|.
- * @private
- */
-goog.exportPath_ = function(name, opt_object, opt_objectToExportTo) {
-  var parts = name.split('.');
-  var cur = opt_objectToExportTo || goog.global;
-
-  // Internet Explorer exhibits strange behavior when throwing errors from
-  // methods externed in this manner.  See the testExportSymbolExceptions in
-  // base_test.html for an example.
-  if (!(parts[0] in cur) && cur.execScript) {
-    cur.execScript('var ' + parts[0]);
-  }
-
-  // Certain browsers cannot parse code in the form for((a in b); c;);
-  // This pattern is produced by the JSCompiler when it collapses the
-  // statement above into the conditional loop below. To prevent this from
-  // happening, use a for-loop and reserve the init logic as below.
-
-  // Parentheses added to eliminate strict JS warning in Firefox.
-  for (var part; parts.length && (part = parts.shift());) {
-    if (!parts.length && goog.isDef(opt_object)) {
-      // last part and we have an object; use it
-      cur[part] = opt_object;
-    } else if (cur[part]) {
-      cur = cur[part];
-    } else {
-      cur = cur[part] = {};
-    }
-  }
-};
-
-
-/**
- * Defines a named value. In uncompiled mode, the value is retreived from
- * CLOSURE_DEFINES or CLOSURE_UNCOMPILED_DEFINES if the object is defined and
- * has the property specified, and otherwise used the defined defaultValue.
- * When compiled the default can be overridden using the compiler
- * options or the value set in the CLOSURE_DEFINES object.
- *
- * @param {string} name The distinguished name to provide.
- * @param {string|number|boolean} defaultValue
- */
-goog.define = function(name, defaultValue) {
-  var value = defaultValue;
-  if (!COMPILED) {
-    if (goog.global.CLOSURE_UNCOMPILED_DEFINES &&
-        Object.prototype.hasOwnProperty.call(
-            goog.global.CLOSURE_UNCOMPILED_DEFINES, name)) {
-      value = goog.global.CLOSURE_UNCOMPILED_DEFINES[name];
-    } else if (goog.global.CLOSURE_DEFINES &&
-        Object.prototype.hasOwnProperty.call(
-            goog.global.CLOSURE_DEFINES, name)) {
-      value = goog.global.CLOSURE_DEFINES[name];
-    }
-  }
-  goog.exportPath_(name, value);
-};
-
-
-/**
- * @define {boolean} DEBUG is provided as a convenience so that debugging code
- * that should not be included in a production js_binary can be easily stripped
- * by specifying --define goog.DEBUG=false to the JSCompiler. For example, most
- * toString() methods should be declared inside an "if (goog.DEBUG)" conditional
- * because they are generally used for debugging purposes and it is difficult
- * for the JSCompiler to statically determine whether they are used.
- */
-goog.DEBUG = true;
-
-
-/**
- * @define {string} LOCALE defines the locale being used for compilation. It is
- * used to select locale specific data to be compiled in js binary. BUILD rule
- * can specify this value by "--define goog.LOCALE=<locale_name>" as JSCompiler
- * option.
- *
- * Take into account that the locale code format is important. You should use
- * the canonical Unicode format with hyphen as a delimiter. Language must be
- * lowercase, Language Script - Capitalized, Region - UPPERCASE.
- * There are few examples: pt-BR, en, en-US, sr-Latin-BO, zh-Hans-CN.
- *
- * See more info about locale codes here:
- * http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers
- *
- * For language codes you should use values defined by ISO 693-1. See it here
- * http://www.w3.org/WAI/ER/IG/ert/iso639.htm. There is only one exception from
- * this rule: the Hebrew language. For legacy reasons the old code (iw) should
- * be used instead of the new code (he), see http://wiki/Main/IIISynonyms.
- */
-goog.define('goog.LOCALE', 'en');  // default to en
-
-
-/**
- * @define {boolean} Whether this code is running on trusted sites.
- *
- * On untrusted sites, several native functions can be defined or overridden by
- * external libraries like Prototype, Datejs, and JQuery and setting this flag
- * to false forces closure to use its own implementations when possible.
- *
- * If your JavaScript can be loaded by a third party site and you are wary about
- * relying on non-standard implementations, specify
- * "--define goog.TRUSTED_SITE=false" to the JSCompiler.
- */
-goog.define('goog.TRUSTED_SITE', true);
-
-
-/**
- * @define {boolean} Whether a project is expected to be running in strict mode.
- *
- * This define can be used to trigger alternate implementations compatible with
- * running in EcmaScript Strict mode or warn about unavailable functionality.
- * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions_and_function_scope/Strict_mode
- */
-goog.define('goog.STRICT_MODE_COMPATIBLE', false);
-
-
-/**
- * Creates object stubs for a namespace.  The presence of one or more
- * goog.provide() calls indicate that the file defines the given
- * objects/namespaces.  Provided objects must not be null or undefined.
- * Build tools also scan for provide/require statements
- * to discern dependencies, build dependency files (see deps.js), etc.
- * @see goog.require
- * @param {string} name Namespace provided by this file in the form
- *     "goog.package.part".
- */
-goog.provide = function(name) {
-  if (!COMPILED) {
-    // Ensure that the same namespace isn't provided twice.
-    // A goog.module/goog.provide maps a goog.require to a specific file
-    if (goog.isProvided_(name)) {
-      throw Error('Namespace "' + name + '" already declared.');
-    }
-  }
-
-  goog.constructNamespace_(name);
-};
-
-
-/**
- * @param {string} name Namespace provided by this file in the form
- *     "goog.package.part".
- * @param {Object=} opt_obj The object to embed in the namespace.
- */
-goog.constructNamespace_ = function(name, opt_obj) {
-  if (!COMPILED) {
-    delete goog.implicitNamespaces_[name];
-
-    var namespace = name;
-    while ((namespace = namespace.substring(0, namespace.lastIndexOf('.')))) {
-      if (goog.getObjectByName(namespace)) {
-        break;
-      }
-      goog.implicitNamespaces_[namespace] = true;
-    }
-  }
-
-  goog.exportPath_(name, opt_obj);
-};
-
-
-/**
- * goog.module serves two purposes:
- * - marks a file that must be loaded as a module
- * - reserves a namespace (it can not also be goog.provided)
- * and has three requirements:
- * - goog.module may not be used in the same file as goog.provide.
- * - goog.module must be the first statement in the file.
- * - only one goog.module is allowed per file.
- * When a goog.module annotated file is loaded, it is loaded enclosed in
- * a strict function closure. This means that:
- * - any variable declared in a goog.module file are private to the file,
- * not global. Although the compiler is expected to inline the module.
- * - The code must obey all the rules of "strict" JavaScript.
- * - the file will be marked as "use strict"
- *
- * NOTE: unlike goog.provide, goog.module does not declare any symbols by
- * itself.
- *
- * @param {string} name Namespace provided by this file in the form
- *     "goog.package.part", is expected but not required.
- */
-goog.module = function(name) {
-  if (!goog.isString(name) || !name) {
-    throw Error('Invalid module identifier');
-  }
-  if (!goog.isInModuleLoader_()) {
-    throw Error('Module ' + name + ' has been loaded incorrectly.');
-  }
-  if (goog.moduleLoaderState_.moduleName) {
-    throw Error('goog.module may only be called once per module.');
-  }
-
-  // Store the module name for the loader.
-  goog.moduleLoaderState_.moduleName = name;
-  if (!COMPILED) {
-    // Ensure that the same namespace isn't provided twice.
-    // A goog.module/goog.provide maps a goog.require to a specific file
-    if (goog.isProvided_(name)) {
-      throw Error('Namespace "' + name + '" already declared.');
-    }
-    delete goog.implicitNamespaces_[name];
-  }
-};
-
-
-/**
- * @param {string} name The module identifier.
- * @return {?} The module exports for an already loaded module or null.
- *
- * Note: This is not an alternative to goog.require, it does not
- * indicate a hard dependency, instead it is used to indicate
- * an optional dependency or to access the exports of a module
- * that has already been loaded.
- */
-goog.module.get = function(name) {
-  return goog.module.getInternal_(name);
-};
-
-
-/**
- * @param {string} name The module identifier.
- * @return {?} The module exports for an already loaded module or null.
- * @private
- */
-goog.module.getInternal_ = function(name) {
-  if (!COMPILED) {
-    if (goog.isProvided_(name)) {
-      // goog.require only return a value with-in goog.module files.
-      return name in goog.loadedModules_ ?
-          goog.loadedModules_[name] :
-          goog.getObjectByName(name);
-    } else {
-      return null;
-    }
-  }
-};
-
-
-/**
- * @private {{
- *     moduleName:(string|undefined),
- *     declareTestMethods:boolean}|null}}
- */
-goog.moduleLoaderState_ = null;
-
-
-/**
- * @private
- * @return {boolean} Whether a goog.module is currently being initialized.
- */
-goog.isInModuleLoader_ = function() {
-  return goog.moduleLoaderState_ != null;
-};
-
-
-/**
- * Indicate that a module's exports that are known test methods should
- * be copied to the global object.  This makes the test methods visible to
- * test runners that inspect the global object.
- *
- * TODO(johnlenz): Make the test framework aware of goog.module so
- * that this isn't necessary. Alternately combine this with goog.setTestOnly
- * to minimize boiler plate.
- */
-goog.module.declareTestMethods = function() {
-  if (!goog.isInModuleLoader_()) {
-    throw new Error('goog.module.declareTestMethods must be called from ' +
-        'within a goog.module');
-  }
-  goog.moduleLoaderState_.declareTestMethods = true;
-};
-
-
-/**
- * Indicate that a module's exports that are known test methods should
- * be copied to the global object.  This makes the test methods visible to
- * test runners that inspect the global object.
- *
- * TODO(johnlenz): Make the test framework aware of goog.module so
- * that this isn't necessary. Alternately combine this with goog.setTestOnly
- * to minimize boiler plate.
- */
-goog.module.declareLegacyNamespace = function() {
-  if (!COMPILED && !goog.isInModuleLoader_()) {
-    throw new Error('goog.module.declareLegacyNamespace must be called from ' +
-        'within a goog.module');
-  }
-  if (!COMPILED && !goog.moduleLoaderState_.moduleName) {
-    throw Error('goog.module must be called prior to ' + 
-        'goog.module.declareLegacyNamespace.');
-  }
-  goog.moduleLoaderState_.declareLegacyNamespace = true;
-}
-
-
-/**
- * Marks that the current file should only be used for testing, and never for
- * live code in production.
- *
- * In the case of unit tests, the message may optionally be an exact namespace
- * for the test (e.g. 'goog.stringTest'). The linter will then ignore the extra
- * provide (if not explicitly defined in the code).
- *
- * @param {string=} opt_message Optional message to add to the error that's
- *     raised when used in production code.
- */
-goog.setTestOnly = function(opt_message) {
-  if (COMPILED && !goog.DEBUG) {
-    opt_message = opt_message || '';
-    throw Error('Importing test-only code into non-debug environment' +
-                (opt_message ? ': ' + opt_message : '.'));
-  }
-};
-
-
-/**
- * Forward declares a symbol. This is an indication to the compiler that the
- * symbol may be used in the source yet is not required and may not be provided
- * in compilation.
- *
- * The most common usage of forward declaration is code that takes a type as a
- * function parameter but does not need to require it. By forward declaring
- * instead of requiring, no hard dependency is made, and (if not required
- * elsewhere) the namespace may never be required and thus, not be pulled
- * into the JavaScript binary. If it is required elsewhere, it will be type
- * checked as normal.
- *
- * MOE:begin_intracomment_strip
- * See the detailed proposal at http://b/11534958
- * Design doc at http://go/forwarddeclare
- * Also see apps framework's forward_declarations builddef:
- * http://go/forwarddeclarations
- * MOE:end_intracomment_strip
- *
- * @param {string} name The namespace to forward declare in the form of
- *     "goog.package.part".
- */
-goog.forwardDeclare = function(name) {};
-
-
-if (!COMPILED) {
-
-  /**
-   * Check if the given name has been goog.provided. This will return false for
-   * names that are available only as implicit namespaces.
-   * @param {string} name name of the object to look for.
-   * @return {boolean} Whether the name has been provided.
-   * @private
-   */
-  goog.isProvided_ = function(name) {
-    return (name in goog.loadedModules_) ||
-        (!goog.implicitNamespaces_[name] &&
-            goog.isDefAndNotNull(goog.getObjectByName(name)));
-  };
-
-  /**
-   * Namespaces implicitly defined by goog.provide. For example,
-   * goog.provide('goog.events.Event') implicitly declares that 'goog' and
-   * 'goog.events' must be namespaces.
-   *
-   * @type {Object.<string, (boolean|undefined)>}
-   * @private
-   */
-  goog.implicitNamespaces_ = {'goog.module': true};
-
-  // NOTE: We add goog.module as an implicit namespace as goog.module is defined
-  // here and because the existing module package has not been moved yet out of
-  // the goog.module namespace. This satisifies both the debug loader and
-  // ahead-of-time dependency management.
-}
-
-
-/**
- * Returns an object based on its fully qualified external name.  The object
- * is not found if null or undefined.  If you are using a compilation pass that
- * renames property names beware that using this function will not find renamed
- * properties.
- *
- * @param {string} name The fully qualified name.
- * @param {Object=} opt_obj The object within which to look; default is
- *     |goog.global|.
- * @return {?} The value (object or primitive) or, if not found, null.
- */
-goog.getObjectByName = function(name, opt_obj) {
-  var parts = name.split('.');
-  var cur = opt_obj || goog.global;
-  for (var part; part = parts.shift(); ) {
-    if (goog.isDefAndNotNull(cur[part])) {
-      cur = cur[part];
-    } else {
-      return null;
-    }
-  }
-  return cur;
-};
-
-
-/**
- * Globalizes a whole namespace, such as goog or goog.lang.
- *
- * @param {Object} obj The namespace to globalize.
- * @param {Object=} opt_global The object to add the properties to.
- * @deprecated Properties may be explicitly exported to the global scope, but
- *     this should no longer be done in bulk.
- */
-goog.globalize = function(obj, opt_global) {
-  var global = opt_global || goog.global;
-  for (var x in obj) {
-    global[x] = obj[x];
-  }
-};
-
-
-/**
- * Adds a dependency from a file to the files it requires.
- * @param {string} relPath The path to the js file.
- * @param {Array.<string>} provides An array of strings with
- *     the names of the objects this file provides.
- * @param {Array.<string>} requires An array of strings with
- *     the names of the objects this file requires.
- * @param {boolean=} opt_isModule Whether this dependency must be loaded as
- *     a module as declared by goog.module.
- */
-goog.addDependency = function(relPath, provides, requires, opt_isModule) {
-  if (goog.DEPENDENCIES_ENABLED) {
-    var provide, require;
-    var path = relPath.replace(/\\/g, '/');
-    var deps = goog.dependencies_;
-    for (var i = 0; provide = provides[i]; i++) {
-      deps.nameToPath[provide] = path;
-      deps.pathIsModule[path] = !!opt_isModule;
-    }
-    for (var j = 0; require = requires[j]; j++) {
-      if (!(path in deps.requires)) {
-        deps.requires[path] = {};
-      }
-      deps.requires[path][require] = true;
-    }
-  }
-};
-
-
-// MOE:begin_strip
-/**
- * Whether goog.require should throw an exception if it fails.
- * @type {boolean}
- */
-goog.useStrictRequires = false;
-
-
-// MOE:end_strip
-
-
-// NOTE(nnaze): The debug DOM loader was included in base.js as an original way
-// to do "debug-mode" development.  The dependency system can sometimes be
-// confusing, as can the debug DOM loader's asynchronous nature.
-//
-// With the DOM loader, a call to goog.require() is not blocking -- the script
-// will not load until some point after the current script.  If a namespace is
-// needed at runtime, it needs to be defined in a previous script, or loaded via
-// require() with its registered dependencies.
-// User-defined namespaces may need their own deps file.  See http://go/js_deps,
-// http://go/genjsdeps, or, externally, DepsWriter.
-// https://developers.google.com/closure/library/docs/depswriter
-//
-// Because of legacy clients, the DOM loader can't be easily removed from
-// base.js.  Work is being done to make it disableable or replaceable for
-// different environments (DOM-less JavaScript interpreters like Rhino or V8,
-// for example). See bootstrap/ for more information.
-
-
-/**
- * @define {boolean} Whether to enable the debug loader.
- *
- * If enabled, a call to goog.require() will attempt to load the namespace by
- * appending a script tag to the DOM (if the namespace has been registered).
- *
- * If disabled, goog.require() will simply assert that the namespace has been
- * provided (and depend on the fact that some outside tool correctly ordered
- * the script).
- */
-goog.define('goog.ENABLE_DEBUG_LOADER', true);
-
-
-/**
- * @param {string} msg
- * @private
- */
-goog.logToConsole_ = function(msg) {
-  if (goog.global.console) {
-    goog.global.console['error'](msg);
-  }
-};
-
-
-/**
- * Implements a system for the dynamic resolution of dependencies that works in
- * parallel with the BUILD system. Note that all calls to goog.require will be
- * stripped by the JSCompiler when the --closure_pass option is used.
- * @see goog.provide
- * @param {string} name Namespace to include (as was given in goog.provide()) in
- *     the form "goog.package.part".
- * @return {?} If called within a goog.module file, the associated namespace or
- *     module otherwise null.
- */
-goog.require = function(name) {
-
-  // If the object already exists we do not need do do anything.
-  if (!COMPILED) {
-    if (goog.isProvided_(name)) {
-      if (goog.isInModuleLoader_()) {
-        return goog.module.getInternal_(name);
-      } else {
-        return null;
-      }
-    }
-
-    if (goog.ENABLE_DEBUG_LOADER) {
-      var path = goog.getPathFromDeps_(name);
-      if (path) {
-        goog.included_[path] = true;
-        goog.writeScripts_();
-        return null;
-      }
-    }
-
-    var errorMessage = 'goog.require could not find: ' + name;
-    goog.logToConsole_(errorMessage);
-
-    // MOE:begin_strip
-
-    // NOTE(nicksantos): We could always throw an error, but this would break
-    // legacy users that depended on this failing silently. Instead, the
-    // compiler should warn us when there are invalid goog.require calls.
-    // For now, we simply give clients a way to turn strict mode on.
-    if (goog.useStrictRequires) {
-      throw Error(errorMessage);
-    }
-
-    return null;
-
-    // In external Closure, always error.
-    // MOE:end_strip_and_replace throw Error(errorMessage);
-  }
-};
-
-
-/**
- * Path for included scripts.
- * @type {string}
- */
-goog.basePath = '';
-
-
-/**
- * A hook for overriding the base path.
- * @type {string|undefined}
- */
-goog.global.CLOSURE_BASE_PATH;
-
-
-/**
- * Whether to write out Closure's deps file. By default, the deps are written.
- * @type {boolean|undefined}
- */
-goog.global.CLOSURE_NO_DEPS;
-
-
-/**
- * A function to import a single script. This is meant to be overridden when
- * Closure is being run in non-HTML contexts, such as web workers. It's defined
- * in the global scope so that it can be set before base.js is loaded, which
- * allows deps.js to be imported properly.
- *
- * The function is passed the script source, which is a relative URI. It should
- * return true if the script was imported, false otherwise.
- * @type {(function(string): boolean)|undefined}
- */
-goog.global.CLOSURE_IMPORT_SCRIPT;
-
-
-/**
- * Null function used for default values of callbacks, etc.
- * @return {void} Nothing.
- */
-goog.nullFunction = function() {};
-
-
-/**
- * The identity function. Returns its first argument.
- *
- * @param {*=} opt_returnValue The single value that will be returned.
- * @param {...*} var_args Optional trailing arguments. These are ignored.
- * @return {?} The first argument. We can't know the type -- just pass it along
- *      without type.
- * @deprecated Use goog.functions.identity instead.
- */
-goog.identityFunction = function(opt_returnValue, var_args) {
-  return opt_returnValue;
-};
-
-
-/**
- * When defining a class Foo with an abstract method bar(), you can do:
- * Foo.prototype.bar = goog.abstractMethod
- *
- * Now if a subclass of Foo fails to override bar(), an error will be thrown
- * when bar() is invoked.
- *
- * Note: This does not take the name of the function to override as an argument
- * because that would make it more difficult to obfuscate our JavaScript code.
- *
- * @type {!Function}
- * @throws {Error} when invoked to indicate the method should be overridden.
- */
-goog.abstractMethod = function() {
-  throw Error('unimplemented abstract method');
-};
-
-
-/**
- * Adds a {@code getInstance} static method that always returns the same
- * instance object.
- * @param {!Function} ctor The constructor for the class to add the static
- *     method to.
- */
-goog.addSingletonGetter = function(ctor) {
-  ctor.getInstance = function() {
-    if (ctor.instance_) {
-      return ctor.instance_;
-    }
-    if (goog.DEBUG) {
-      // NOTE: JSCompiler can't optimize away Array#push.
-      goog.instantiatedSingletons_[goog.instantiatedSingletons_.length] = ctor;
-    }
-    return ctor.instance_ = new ctor;
-  };
-};
-
-
-/**
- * All singleton classes that have been instantiated, for testing. Don't read
- * it directly, use the {@code goog.testing.singleton} module. The compiler
- * removes this variable if unused.
- * @type {!Array.<!Function>}
- * @private
- */
-goog.instantiatedSingletons_ = [];
-
-
-/**
- * @define {boolean} Whether to load goog.modules using {@code eval} when using
- * the debug loader.  This provides a better debugging experience as the
- * source is unmodified and can be edited using Chrome Workspaces or
- * similiar.  However in some environments the use of {@code eval} is banned
- * so we provide an alternative.
- */
-goog.define('goog.LOAD_MODULE_USING_EVAL', true);
-
-
-/**
- * @define {boolean} Whether the exports of goog.modules should be sealed when
- * possible.
- */
-goog.define('goog.SEAL_MODULE_EXPORTS', goog.DEBUG);
-
-
-/**
- * The registry of initialized modules:
- * the module identifier to module exports map.
- * @private @const {Object.<string, ?>}
- */
-goog.loadedModules_ = {};
-
-
-/**
- * True if goog.dependencies_ is available.
- * @const {boolean}
- */
-goog.DEPENDENCIES_ENABLED = !COMPILED && goog.ENABLE_DEBUG_LOADER;
-
-
-if (goog.DEPENDENCIES_ENABLED) {
-  /**
-   * Object used to keep track of urls that have already been added. This record
-   * allows the prevention of circular dependencies.
-   * @type {Object}
-   * @private
-   */
-  goog.included_ = {};
-
-
-  /**
-   * This object is used to keep track of dependencies and other data that is
-   * used for loading scripts.
-   * @private
-   * @type {Object}
-   */
-  goog.dependencies_ = {
-    pathIsModule: {}, // 1 to 1
-    nameToPath: {}, // many to 1
-    requires: {}, // 1 to many
-    // Used when resolving dependencies to prevent us from visiting file twice.
-    visited: {},
-    written: {} // Used to keep track of script files we have written.
-  };
-
-
-  /**
-   * Tries to detect whether is in the context of an HTML document.
-   * @return {boolean} True if it looks like HTML document.
-   * @private
-   */
-  goog.inHtmlDocument_ = function() {
-    var doc = goog.global.document;
-    return typeof doc != 'undefined' &&
-           'write' in doc;  // XULDocument misses write.
-  };
-
-
-  /**
-   * Tries to detect the base path of base.js script that bootstraps Closure.
-   * @private
-   */
-  goog.findBasePath_ = function() {
-    if (goog.global.CLOSURE_BASE_PATH) {
-      goog.basePath = goog.global.CLOSURE_BASE_PATH;
-      return;
-    } else if (!goog.inHtmlDocument_()) {
-      return;
-    }
-    var doc = goog.global.document;
-    var scripts = doc.getElementsByTagName('script');
-    // Search backwards since the current script is in almost all cases the one
-    // that has base.js.
-    for (var i = scripts.length - 1; i >= 0; --i) {
-      var src = scripts[i].src;
-      var qmark = src.lastIndexOf('?');
-      var l = qmark == -1 ? src.length : qmark;
-      if (src.substr(l - 7, 7) == 'base.js') {
-        goog.basePath = src.substr(0, l - 7);
-        return;
-      }
-    }
-  };
-
-
-  /**
-   * Imports a script if, and only if, that script hasn't already been imported.
-   * (Must be called at execution time)
-   * @param {string} src Script source.
-   * @param {string=} opt_sourceText The optionally source text to evaluate
-   * @private
-   */
-  goog.importScript_ = function(src, opt_sourceText) {
-    var importScript = goog.global.CLOSURE_IMPORT_SCRIPT ||
-        goog.writeScriptTag_;
-    if (importScript(src, opt_sourceText)) {
-      goog.dependencies_.written[src] = true;
-    }
-  };
-
-
-  /** @const @private {boolean} */
-  goog.IS_OLD_IE_ = goog.global.document &&
-      goog.global.document.all && !goog.global.atob;
-
-
-  /**
-   * Given a URL initiate retrieval and execution of the module.
-   * @param {string} src Script source URL.
-   * @private
-   */
-  goog.importModule_ = function(src) {
-    // In an attempt to keep browsers from timing out loading scripts using
-    // synchronous XHRs, put each load in its own script block.
-    var bootstrap = 'goog.retrieveAndExecModule_("' + src + '");';
-
-    if (goog.importScript_('', bootstrap)) {
-      goog.dependencies_.written[src] = true;
-    }
-  };
-
-
-  /** @private {Array.<string>} */
-  goog.queuedModules_ = [];
-
-
-  /**
-   * Retrieve and execute a module.
-   * @param {string} src Script source URL.
-   * @private
-   */
-  goog.retrieveAndExecModule_ = function(src) {
-    // Canonicalize the path, removing any /./ or /../ since Chrome's debugging
-    // console doesn't auto-canonicalize XHR loads as it does <script> srcs.
-    var separator;
-    while ((separator = src.indexOf('/./')) != -1) {
-      src = src.substr(0, separator) + src.substr(separator + '/.'.length);
-    }
-    while ((separator = src.indexOf('/../')) != -1) {
-      var previousComponent = src.lastIndexOf('/', separator - 1);
-      src = src.substr(0, previousComponent) +
-          src.substr(separator + '/..'.length);
-    }
-
-    var importScript = goog.global.CLOSURE_IMPORT_SCRIPT ||
-        goog.writeScriptTag_;
-
-    var scriptText = null;
-
-    var xhr = new goog.global['XMLHttpRequest']();
-
-    /** @this {Object} */
-    xhr.onload = function() {
-      scriptText = this.responseText;
-    };
-    xhr.open('get', src, false);
-    xhr.send();
-
-    scriptText = xhr.responseText;
-
-    if (scriptText != null) {
-      var execModuleScript = goog.wrapModule_(src, scriptText);
-      var isOldIE = goog.IS_OLD_IE_;
-      if (isOldIE) {
-        goog.queuedModules_.push(execModuleScript);
-      } else {
-        importScript(src, execModuleScript);
-      }
-      goog.dependencies_.written[src] = true;
-    } else {
-      throw new Error('load of ' + src + 'failed');
-    }
-  };
-
-
-  /**
-   * Return an appropriate module text. Suitable to insert into
-   * a script tag (that is unescaped).
-   * @param {string} srcUrl
-   * @param {string} scriptText
-   * @return {string}
-   * @private
-   */
-  goog.wrapModule_ = function(srcUrl, scriptText) {
-    if (!goog.LOAD_MODULE_USING_EVAL || !goog.isDef(goog.global.JSON)) {
-      return '' +
-          'goog.loadModule(function(exports) {' +
-          '"use strict";' +
-          scriptText +
-          '\n' + // terminate any trailing single line comment.
-          ';return exports' +
-          '});' +
-          '\n//# sourceURL=' + srcUrl + '\n';
-    } else {
-      return '' +
-          'goog.loadModule(' +
-          goog.global.JSON.stringify(
-              scriptText + '\n//# sourceURL=' + srcUrl + '\n') +
-          ');';
-    }
-  };
-
-
-  /**
-   * Load any deferred goog.module loads.
-   * @private
-   */
-  goog.loadQueuedModules_ = function() {
-    var count = goog.queuedModules_.length;
-    if (count > 0) {
-      var queue = goog.queuedModules_;
-      goog.queuedModules_ = [];
-      for (var i = 0; i < count; i++) {
-        var entry = queue[i];
-        goog.globalEval(entry);
-      }
-    }
-  };
-
-
-  /**
-   * @param {function(?):?|string} moduleDef The module definition.
-   */
-  goog.loadModule = function(moduleDef) {
-    // NOTE: we allow function definitions to be either in the from
-    // of a string to eval (which keeps the original source intact) or
-    // in a eval forbidden environment (CSP) we allow a function definition
-    // which in its body must call {@code goog.module}, and return the exports
-    // of the module.
-    try {
-      goog.moduleLoaderState_ = {
-          moduleName: undefined, declareTestMethods: false};
-      var exports;
-      if (goog.isFunction(moduleDef)) {
-        exports = moduleDef.call(goog.global, {});
-      } else if (goog.isString(moduleDef)) {
-        exports = goog.loadModuleFromSource_.call(goog.global, moduleDef);
-      } else {
-        throw Error('Invalid module definition');
-      }
-
-      var moduleName = goog.moduleLoaderState_.moduleName;
-      if (!goog.isString(moduleName) || !moduleName) {
-        throw Error('Invalid module name \"' + moduleName + '\"');
-      }
-
-      // Don't seal legacy namespaces as they may be uses as a parent of
-      // another namespace
-      if (goog.moduleLoaderState_.declareLegacyNamespace) {
-        goog.constructNamespace_(moduleName, exports);
-      } else if (goog.SEAL_MODULE_EXPORTS && Object.seal) {
-        Object.seal(exports);
-      }
-
-      goog.loadedModules_[moduleName] = exports;
-      if (goog.moduleLoaderState_.declareTestMethods) {
-        for (var entry in exports) {
-          if (entry.indexOf('test', 0) === 0 ||
-              entry == 'tearDown' ||
-              entry == 'setup') {
-            goog.global[entry] = exports[entry];
-          }
-        }
-      }
-    } finally {
-      goog.moduleLoaderState_ = null;
-    }
-  };
-
-
-  /**
-   * @private @const {function(string):?}
-   */
-  goog.loadModuleFromSource_ = function() {
-    // NOTE: we avoid declaring parameters or local variables here to avoid
-    // masking globals or leaking values into the module definition.
-    'use strict';
-    var exports = {};
-    eval(arguments[0]);
-    return exports;
-  };
-
-
-  /**
-   * The default implementation of the import function. Writes a script tag to
-   * import the script.
-   *
-   * @param {string} src The script url.
-   * @param {string=} opt_sourceText The optionally source text to evaluate
-   * @return {boolean} True if the script was imported, false otherwise.
-   * @private
-   */
-  goog.writeScriptTag_ = function(src, opt_sourceText) {
-    if (goog.inHtmlDocument_()) {
-      var doc = goog.global.document;
-
-      // If the user tries to require a new symbol after document load,
-      // something has gone terribly wrong. Doing a document.write would
-      // wipe out the page.
-      if (doc.readyState == 'complete') {
-        // Certain test frameworks load base.js multiple times, which tries
-        // to write deps.js each time. If that happens, just fail silently.
-        // These frameworks wipe the page between each load of base.js, so this
-        // is OK.
-        var isDeps = /\bdeps.js$/.test(src);
-        if (isDeps) {
-          return false;
-        } else {
-          throw Error('Cannot write "' + src + '" after document load');
-        }
-      }
-
-      var isOldIE = goog.IS_OLD_IE_;
-
-      if (opt_sourceText === undefined) {
-        if (!isOldIE) {
-          doc.write(
-              '<script type="text/javascript" src="' +
-                  src + '"></' + 'script>');
-        } else {
-          var state = " onreadystatechange='goog.onScriptLoad_(this, " +
-              ++goog.lastNonModuleScriptIndex_ + ")' ";
-          doc.write(
-              '<script type="text/javascript" src="' +
-                  src + '"' + state + '></' + 'script>');
-        }
-      } else {
-        doc.write(
-            '<script type="text/javascript">' +
-            opt_sourceText +
-            '</' + 'script>');
-      }
-      return true;
-    } else {
-      return false;
-    }
-  };
-
-
-  /** @private {number} */
-  goog.lastNonModuleScriptIndex_ = 0;
-
-
-  /**
-   * A readystatechange handler for legacy IE
-   * @param {HTMLScriptElement} script
-   * @param {number} scriptIndex
-   * @return {boolean}
-   * @private
-   */
-  goog.onScriptLoad_ = function(script, scriptIndex) {
-    // for now load the modules when we reach the last script,
-    // later allow more inter-mingling.
-    if (script.readyState == 'complete' &&
-        goog.lastNonModuleScriptIndex_ == scriptIndex) {
-      goog.loadQueuedModules_();
-    }
-    return true;
-  };
-
-  /**
-   * Resolves dependencies based on the dependencies added using addDependency
-   * and calls importScript_ in the correct order.
-   * @private
-   */
-  goog.writeScripts_ = function() {
-    // The scripts we need to write this time.
-    var scripts = [];
-    var seenScript = {};
-    var deps = goog.dependencies_;
-
-    function visitNode(path) {
-      if (path in deps.written) {
-        return;
-      }
-
-      // We have already visited this one. We can get here if we have cyclic
-      // dependencies.
-      if (path in deps.visited) {
-        if (!(path in seenScript)) {
-          seenScript[path] = true;
-          scripts.push(path);
-        }
-        return;
-      }
-
-      deps.visited[path] = true;
-
-      if (path in deps.requires) {
-        for (var requireName in deps.requires[path]) {
-          // If the required name is defined, we assume that it was already
-          // bootstrapped by other means.
-          if (!goog.isProvided_(requireName)) {
-            if (requireName in deps.nameToPath) {
-              visitNode(deps.nameToPath[requireName]);
-            } else {
-              throw Error('Undefined nameToPath for ' + requireName);
-            }
-          }
-        }
-      }
-
-      if (!(path in seenScript)) {
-        seenScript[path] = true;
-        scripts.push(path);
-      }
-    }
-
-    for (var path in goog.included_) {
-      if (!deps.written[path]) {
-        visitNode(path);
-      }
-    }
-
-    // record that we are going to load all these scripts.
-    for (var i = 0; i < scripts.length; i++) {
-      var path = scripts[i];
-      goog.dependencies_.written[path] = true;
-    }
-
-    // If a module is loaded synchronously then we need to
-    // clear the current inModuleLoader value, and restore it when we are
-    // done loading the current "requires".
-    var moduleState = goog.moduleLoaderState_;
-    goog.moduleLoaderState_ = null;
-
-    var loadingModule = false;
-    for (var i = 0; i < scripts.length; i++) {
-      var path = scripts[i];
-      if (path) {
-        if (!deps.pathIsModule[path]) {
-          goog.importScript_(goog.basePath + path);
-        } else {
-          loadingModule = true;
-          goog.importModule_(goog.basePath + path);
-        }
-      } else {
-        goog.moduleLoaderState_ = moduleState;
-        throw Error('Undefined script input');
-      }
-    }
-
-    // restore the current "module loading state"
-    goog.moduleLoaderState_ = moduleState;
-  };
-
-
-  /**
-   * Looks at the dependency rules and tries to determine the script file that
-   * fulfills a particular rule.
-   * @param {string} rule In the form goog.namespace.Class or project.script.
-   * @return {?string} Url corresponding to the rule, or null.
-   * @private
-   */
-  goog.getPathFromDeps_ = function(rule) {
-    if (rule in goog.dependencies_.nameToPath) {
-      return goog.dependencies_.nameToPath[rule];
-    } else {
-      return null;
-    }
-  };
-
-  goog.findBasePath_();
-
-  // Allow projects to manage the deps files themselves.
-  if (!goog.global.CLOSURE_NO_DEPS) {
-    goog.importScript_(goog.basePath + 'deps.js');
-  }
-}
-
-
-
-//==============================================================================
-// Language Enhancements
-//==============================================================================
-
-
-/**
- * This is a "fixed" version of the typeof operator.  It differs from the typeof
- * operator in such a way that null returns 'null' and arrays return 'array'.
- * @param {*} value The value to get the type of.
- * @return {string} The name of the type.
- */
-goog.typeOf = function(value) {
-  var s = typeof value;
-  if (s == 'object') {
-    if (value) {
-      // Check these first, so we can avoid calling Object.prototype.toString if
-      // possible.
-      //
-      // IE improperly marshals tyepof across execution contexts, but a
-      // cross-context object will still return false for "instanceof Object".
-      if (value instanceof Array) {
-        return 'array';
-      } else if (value instanceof Object) {
-        return s;
-      }
-
-      // HACK: In order to use an Object prototype method on the arbitrary
-      //   value, the compiler requires the value be cast to type Object,
-      //   even though the ECMA spec explicitly allows it.
-      var className = Object.prototype.toString.call(
-          /** @type {Object} */ (value));
-      // In Firefox 3.6, attempting to access iframe window objects' length
-      // property throws an NS_ERROR_FAILURE, so we need to special-case it
-      // here.
-      if (className == '[object Window]') {
-        return 'object';
-      }
-
-      // We cannot always use constructor == Array or instanceof Array because
-      // different frames have different Array objects. In IE6, if the iframe
-      // where the array was created is destroyed, the array loses its
-      // prototype. Then dereferencing val.splice here throws an exception, so
-      // we can't use goog.isFunction. Calling typeof directly returns 'unknown'
-      // so that will work. In this case, this function will return false and
-      // most array functions will still work because the array is still
-      // array-like (supports length and []) even though it has lost its
-      // prototype.
-      // Mark Miller noticed that Object.prototype.toString
-      // allows access to the unforgeable [[Class]] property.
-      //  15.2.4.2 Object.prototype.toString ( )
-      //  When the toString method is called, the following steps are taken:
-      //      1. Get the [[Class]] property of this object.
-      //      2. Compute a string value by concatenating the three strings
-      //         "[object ", Result(1), and "]".
-      //      3. Return Result(2).
-      // and this behavior survives the destruction of the execution context.
-      if ((className == '[object Array]' ||
-           // In IE all non value types are wrapped as objects across window
-           // boundaries (not iframe though) so we have to do object detection
-           // for this edge case.
-           typeof value.length == 'number' &&
-           typeof value.splice != 'undefined' &&
-           typeof value.propertyIsEnumerable != 'undefined' &&
-           !value.propertyIsEnumerable('splice')
-
-          )) {
-        return 'array';
-      }
-      // HACK: There is still an array case that fails.
-      //     function ArrayImpostor() {}
-      //     ArrayImpostor.prototype = [];
-      //     var impostor = new ArrayImpostor;
-      // this can be fixed by getting rid of the fast path
-      // (value instanceof Array) and solely relying on
-      // (value && Object.prototype.toString.vall(value) === '[object Array]')
-      // but that would require many more function calls and is not warranted
-      // unless closure code is receiving objects from untrusted sources.
-
-      // IE in cross-window calls does not correctly marshal the function type
-      // (it appears just as an object) so we cannot use just typeof val ==
-      // 'function'. However, if the object has a call property, it is a
-      // function.
-      if ((className == '[object Function]' ||
-          typeof value.call != 'undefined' &&
-          typeof value.propertyIsEnumerable != 'undefined' &&
-          !value.propertyIsEnumerable('call'))) {
-        return 'function';
-      }
-
-    } else {
-      return 'null';
-    }
-
-  } else if (s == 'function' && typeof value.call == 'undefined') {
-    // In Safari typeof nodeList returns 'function', and on Firefox typeof
-    // behaves similarly for HTML{Applet,Embed,Object}, Elements and RegExps. We
-    // would like to return object for those and we can detect an invalid
-    // function by making sure that the function object has a call method.
-    return 'object';
-  }
-  return s;
-};
-
-
-/**
- * Returns true if the specified value is null.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is null.
- */
-goog.isNull = function(val) {
-  return val === null;
-};
-
-
-/**
- * Returns true if the specified value is defined and not null.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is defined and not null.
- */
-goog.isDefAndNotNull = function(val) {
-  // Note that undefined == null.
-  return val != null;
-};
-
-
-/**
- * Returns true if the specified value is an array.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is an array.
- */
-goog.isArray = function(val) {
-  return goog.typeOf(val) == 'array';
-};
-
-
-/**
- * Returns true if the object looks like an array. To qualify as array like
- * the value needs to be either a NodeList or an object with a Number length
- * property.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is an array.
- */
-goog.isArrayLike = function(val) {
-  var type = goog.typeOf(val);
-  return type == 'array' || type == 'object' && typeof val.length == 'number';
-};
-
-
-/**
- * Returns true if the object looks like a Date. To qualify as Date-like the
- * value needs to be an object and have a getFullYear() function.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is a like a Date.
- */
-goog.isDateLike = function(val) {
-  return goog.isObject(val) && typeof val.getFullYear == 'function';
-};
-
-
-/**
- * Returns true if the specified value is a string.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is a string.
- */
-goog.isString = function(val) {
-  return typeof val == 'string';
-};
-
-
-/**
- * Returns true if the specified value is a boolean.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is boolean.
- */
-goog.isBoolean = function(val) {
-  return typeof val == 'boolean';
-};
-
-
-/**
- * Returns true if the specified value is a number.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is a number.
- */
-goog.isNumber = function(val) {
-  return typeof val == 'number';
-};
-
-
-/**
- * Returns true if the specified value is a function.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is a function.
- */
-goog.isFunction = function(val) {
-  return goog.typeOf(val) == 'function';
-};
-
-
-/**
- * Returns true if the specified value is an object.  This includes arrays and
- * functions.
- * @param {?} val Variable to test.
- * @return {boolean} Whether variable is an object.
- */
-goog.isObject = function(val) {
-  var type = typeof val;
-  return type == 'object' && val != null || type == 'function';
-  // return Object(val) === val also works, but is slower, especially if val is
-  // not an object.
-};
-
-
-/**
- * Gets a unique ID for an object. This mutates the object so that further calls
- * with the same object as a parameter returns the same value. The unique ID is
- * guaranteed to be unique across the current session amongst objects that are
- * passed into {@code getUid}. There is no guarantee that the ID is unique or
- * consistent across sessions. It is unsafe to generate unique ID for function
- * prototypes.
- *
- * @param {Object} obj The object to get the unique ID for.
- * @return {number} The unique ID for the object.
- */
-goog.getUid = function(obj) {
-  // TODO(arv): Make the type stricter, do not accept null.
-
-  // In Opera window.hasOwnProperty exists but always returns false so we avoid
-  // using it. As a consequence the unique ID generated for BaseClass.prototype
-  // and SubClass.prototype will be the same.
-  return obj[goog.UID_PROPERTY_] ||
-      (obj[goog.UID_PROPERTY_] = ++goog.uidCounter_);
-};
-
-
-/**
- * Whether the given object is alreay assigned a unique ID.
- *
- * This does not modify the object.
- *
- * @param {Object} obj The object to check.
- * @return {boolean} Whether there an assigned unique id for the object.
- */
-goog.hasUid = function(obj) {
-  return !!obj[goog.UID_PROPERTY_];
-};
-
-
-/**
- * Removes the unique ID from an object. This is useful if the object was
- * previously mutated using {@code goog.getUid} in which case the mutation is
- * undone.
- * @param {Object} obj The object to remove the unique ID field from.
- */
-goog.removeUid = function(obj) {
-  // TODO(arv): Make the type stricter, do not accept null.
-
-  // In IE, DOM nodes are not instances of Object and throw an exception if we
-  // try to delete.  Instead we try to use removeAttribute.
-  if ('removeAttribute' in obj) {
-    obj.removeAttribute(goog.UID_PROPERTY_);
-  }
-  /** @preserveTry */
-  try {
-    delete obj[goog.UID_PROPERTY_];
-  } catch (ex) {
-  }
-};
-
-
-/**
- * Name for unique ID property. Initialized in a way to help avoid collisions
- * with other closure JavaScript on the same page.
- * @type {string}
- * @private
- */
-goog.UID_PROPERTY_ = 'closure_uid_' + ((Math.random() * 1e9) >>> 0);
-
-
-/**
- * Counter for UID.
- * @type {number}
- * @private
- */
-goog.uidCounter_ = 0;
-
-
-/**
- * Adds a hash code field to an object. The hash code is unique for the
- * given object.
- * @param {Object} obj The object to get the hash code for.
- * @return {number} The hash code for the object.
- * @deprecated Use goog.getUid instead.
- */
-goog.getHashCode = goog.getUid;
-
-
-/**
- * Removes the hash code field from an object.
- * @param {Object} obj The object to remove the field from.
- * @deprecated Use goog.removeUid instead.
- */
-goog.removeHashCode = goog.removeUid;
-
-
-/**
- * Clones a value. The input may be an Object, Array, or basic type. Objects and
- * arrays will be cloned recursively.
- *
- * WARNINGS:
- * <code>goog.cloneObject</code> does not detect reference loops. Objects that
- * refer to themselves will cause infinite recursion.
- *
- * <code>goog.cloneObject</code> is unaware of unique identifiers, and copies
- * UIDs created by <code>getUid</code> into cloned results.
- *
- * @param {*} obj The value to clone.
- * @return {*} A clone of the input value.
- * @deprecated goog.cloneObject is unsafe. Prefer the goog.object methods.
- */
-goog.cloneObject = function(obj) {
-  var type = goog.typeOf(obj);
-  if (type == 'object' || type == 'array') {
-    if (obj.clone) {
-      return obj.clone();
-    }
-    var clone = type == 'array' ? [] : {};
-    for (var key in obj) {
-      clone[key] = goog.cloneObject(obj[key]);
-    }
-    return clone;
-  }
-
-  return obj;
-};
-
-
-/**
- * A native implementation of goog.bind.
- * @param {Function} fn A function to partially apply.
- * @param {Object|undefined} selfObj Specifies the object which this should
- *     point to when the function is run.
- * @param {...*} var_args Additional arguments that are partially applied to the
- *     function.
- * @return {!Function} A partially-applied form of the function bind() was
- *     invoked as a method of.
- * @private
- * @suppress {deprecated} The compiler thinks that Function.prototype.bind is
- *     deprecated because some people have declared a pure-JS version.
- *     Only the pure-JS version is truly deprecated.
- */
-goog.bindNative_ = function(fn, selfObj, var_args) {
-  return /** @type {!Function} */ (fn.call.apply(fn.bind, arguments));
-};
-
-
-/**
- * A pure-JS implementation of goog.bind.
- * @param {Function} fn A function to partially apply.
- * @param {Object|undefined} selfObj Specifies the object which this should
- *     point to when the function is run.
- * @param {...*} var_args Additional arguments that are partially applied to the
- *     function.
- * @return {!Function} A partially-applied form of the function bind() was
- *     invoked as a method of.
- * @private
- */
-goog.bindJs_ = function(fn, selfObj, var_args) {
-  if (!fn) {
-    throw new Error();
-  }
-
-  if (arguments.length > 2) {
-    var boundArgs = Array.prototype.slice.call(arguments, 2);
-    return function() {
-      // Prepend the bound arguments to the current arguments.
-      var newArgs = Array.prototype.slice.call(arguments);
-      Array.prototype.unshift.apply(newArgs, boundArgs);
-      return fn.apply(selfObj, newArgs);
-    };
-
-  } else {
-    return function() {
-      return fn.apply(selfObj, arguments);
-    };
-  }
-};
-
-
-/**
- * Partially applies this function to a particular 'this object' and zero or
- * more arguments. The result is a new function with some arguments of the first
- * function pre-filled and the value of this 'pre-specified'.
- *
- * Remaining arguments specified at call-time are appended to the pre-specified
- * ones.
- *
- * Also see: {@link #partial}.
- *
- * Usage:
- * <pre>var barMethBound = bind(myFunction, myObj, 'arg1', 'arg2');
- * barMethBound('arg3', 'arg4');</pre>
- *
- * @param {?function(this:T, ...)} fn A function to partially apply.
- * @param {T} selfObj Specifies the object which this should point to when the
- *     function is run.
- * @param {...*} var_args Additional arguments that are partially applied to the
- *     function.
- * @return {!Function} A partially-applied form of the function bind() was
- *     invoked as a method of.
- * @template T
- * @suppress {deprecated} See above.
- */
-goog.bind = function(fn, selfObj, var_args) {
-  // TODO(nicksantos): narrow the type signature.
-  if (Function.prototype.bind &&
-      // NOTE(nicksantos): Somebody pulled base.js into the default Chrome
-      // extension environment. This means that for Chrome extensions, they get
-      // the implementation of Function.prototype.bind that calls goog.bind
-      // instead of the native one. Even worse, we don't want to introduce a
-      // circular dependency between goog.bind and Function.prototype.bind, so
-      // we have to hack this to make sure it works correctly.
-      Function.prototype.bind.toString().indexOf('native code') != -1) {
-    goog.bind = goog.bindNative_;
-  } else {
-    goog.bind = goog.bindJs_;
-  }
-  return goog.bind.apply(null, arguments);
-};
-
-
-/**
- * Like bind(), except that a 'this object' is not required. Useful when the
- * target function is already bound.
- *
- * Usage:
- * var g = partial(f, arg1, arg2);
- * g(arg3, arg4);
- *
- * @param {Function} fn A function to partially apply.
- * @param {...*} var_args Additional arguments that are partially applied to fn.
- * @return {!Function} A partially-applied form of the function bind() was
- *     invoked as a method of.
- */
-goog.partial = function(fn, var_args) {
-  var args = Array.prototype.slice.call(arguments, 1);
-  return function() {
-    // Clone the array (with slice()) and append additional arguments
-    // to the existing arguments.
-    var newArgs = args.slice();
-    newArgs.push.apply(newArgs, arguments);
-    return fn.apply(this, newArgs);
-  };
-};
-
-
-/**
- * Copies all the members of a source object to a target object. This method
- * does not work on all browsers for all objects that contain keys such as
- * toString or hasOwnProperty. Use goog.object.extend for this purpose.
- * @param {Object} target Target.
- * @param {Object} source Source.
- */
-goog.mixin = function(target, source) {
-  for (var x in source) {
-    target[x] = source[x];
-  }
-
-  // For IE7 or lower, the for-in-loop does not contain any properties that are
-  // not enumerable on the prototype object (for example, isPrototypeOf from
-  // Object.prototype) but also it will not include 'replace' on objects that
-  // extend String and change 'replace' (not that it is common for anyone to
-  // extend anything except Object).
-};
-
-
-/**
- * @return {number} An integer value representing the number of milliseconds
- *     between midnight, January 1, 1970 and the current time.
- */
-goog.now = (goog.TRUSTED_SITE && Date.now) || (function() {
-  // Unary plus operator converts its operand to a number which in the case of
-  // a date is done by calling getTime().
-  return +new Date();
-});
-
-
-/**
- * Evals JavaScript in the global scope.  In IE this uses execScript, other
- * browsers use goog.global.eval. If goog.global.eval does not evaluate in the
- * global scope (for example, in Safari), appends a script tag instead.
- * Throws an exception if neither execScript or eval is defined.
- * @param {string} script JavaScript string.
- */
-goog.globalEval = function(script) {
-  if (goog.global.execScript) {
-    goog.global.execScript(script, 'JavaScript');
-  } else if (goog.global.eval) {
-    // Test to see if eval works
-    if (goog.evalWorksForGlobals_ == null) {
-      goog.global.eval('var _et_ = 1;');
-      if (typeof goog.global['_et_'] != 'undefined') {
-        delete goog.global['_et_'];
-        goog.evalWorksForGlobals_ = true;
-      } else {
-        goog.evalWorksForGlobals_ = false;
-      }
-    }
-
-    if (goog.evalWorksForGlobals_) {
-      goog.global.eval(script);
-    } else {
-      var doc = goog.global.document;
-      var scriptElt = doc.createElement('script');
-      scriptElt.type = 'text/javascript';
-      scriptElt.defer = false;
-      // Note(pupius): can't use .innerHTML since "t('<test>')" will fail and
-      // .text doesn't work in Safari 2.  Therefore we append a text node.
-      scriptElt.appendChild(doc.createTextNode(script));
-      doc.body.appendChild(scriptElt);
-      doc.body.removeChild(scriptElt);
-    }
-  } else {
-    throw Error('goog.globalEval not available');
-  }
-};
-
-
-/**
- * Indicates whether or not we can call 'eval' directly to eval code in the
- * global scope. Set to a Boolean by the first call to goog.globalEval (which
- * empirically tests whether eval works for globals). @see goog.globalEval
- * @type {?boolean}
- * @private
- */
-goog.evalWorksForGlobals_ = null;
-
-
-/**
- * Optional map of CSS class names to obfuscated names used with
- * goog.getCssName().
- * @type {Object|undefined}
- * @private
- * @see goog.setCssNameMapping
- */
-goog.cssNameMapping_;
-
-
-/**
- * Optional obfuscation style for CSS class names. Should be set to either
- * 'BY_WHOLE' or 'BY_PART' if defined.
- * @type {string|undefined}
- * @private
- * @see goog.setCssNameMapping
- */
-goog.cssNameMappingStyle_;
-
-
-/**
- * Handles strings that are intended to be used as CSS class names.
- *
- * This function works in tandem with @see goog.setCssNameMapping.
- *
- * Without any mapping set, the arguments are simple joined with a hyphen and
- * passed through unaltered.
- *
- * When there is a mapping, there are two possible styles in which these
- * mappings are used. In the BY_PART style, each part (i.e. in between hyphens)
- * of the passed in css name is rewritten according to the map. In the BY_WHOLE
- * style, the full css name is looked up in the map directly. If a rewrite is
- * not specified by the map, the compiler will output a warning.
- *
- * When the mapping is passed to the compiler, it will replace calls to
- * goog.getCssName with the strings from the mapping, e.g.
- *     var x = goog.getCssName('foo');
- *     var y = goog.getCssName(this.baseClass, 'active');
- *  becomes:
- *     var x= 'foo';
- *     var y = this.baseClass + '-active';
- *
- * If one argument is passed it will be processed, if two are passed only the
- * modifier will be processed, as it is assumed the first argument was generated
- * as a result of calling goog.getCssName.
- *
- * @param {string} className The class name.
- * @param {string=} opt_modifier A modifier to be appended to the class name.
- * @return {string} The class name or the concatenation of the class name and
- *     the modifier.
- */
-goog.getCssName = function(className, opt_modifier) {
-  var getMapping = function(cssName) {
-    return goog.cssNameMapping_[cssName] || cssName;
-  };
-
-  var renameByParts = function(cssName) {
-    // Remap all the parts individually.
-    var parts = cssName.split('-');
-    var mapped = [];
-    for (var i = 0; i < parts.length; i++) {
-      mapped.push(getMapping(parts[i]));
-    }
-    return mapped.join('-');
-  };
-
-  var rename;
-  if (goog.cssNameMapping_) {
-    rename = goog.cssNameMappingStyle_ == 'BY_WHOLE' ?
-        getMapping : renameByParts;
-  } else {
-    rename = function(a) {
-      return a;
-    };
-  }
-
-  if (opt_modifier) {
-    return className + '-' + rename(opt_modifier);
-  } else {
-    return rename(className);
-  }
-};
-
-
-/**
- * Sets the map to check when returning a value from goog.getCssName(). Example:
- * <pre>
- * goog.setCssNameMapping({
- *   "goog": "a",
- *   "disabled": "b",
- * });
- *
- * var x = goog.getCssName('goog');
- * // The following evaluates to: "a a-b".
- * goog.getCssName('goog') + ' ' + goog.getCssName(x, 'disabled')
- * </pre>
- * When declared as a map of string literals to string literals, the JSCompiler
- * will replace all calls to goog.getCssName() using the supplied map if the
- * --closure_pass flag is set.
- *
- * @param {!Object} mapping A map of strings to strings where keys are possible
- *     arguments to goog.getCssName() and values are the corresponding values
- *     that should be returned.
- * @param {string=} opt_style The style of css name mapping. There are two valid
- *     options: 'BY_PART', and 'BY_WHOLE'.
- * @see goog.getCssName for a description.
- */
-goog.setCssNameMapping = function(mapping, opt_style) {
-  goog.cssNameMapping_ = mapping;
-  goog.cssNameMappingStyle_ = opt_style;
-};
-
-
-/**
- * To use CSS renaming in compiled mode, one of the input files should have a
- * call to goog.setCssNameMapping() with an object literal that the JSCompiler
- * can extract and use to replace all calls to goog.getCssName(). In uncompiled
- * mode, JavaScript code should be loaded before this base.js file that declares
- * a global variable, CLOSURE_CSS_NAME_MAPPING, which is used below. This is
- * to ensure that the mapping is loaded before any calls to goog.getCssName()
- * are made in uncompiled mode.
- *
- * A hook for overriding the CSS name mapping.
- * @type {Object|undefined}
- */
-goog.global.CLOSURE_CSS_NAME_MAPPING;
-
-
-if (!COMPILED && goog.global.CLOSURE_CSS_NAME_MAPPING) {
-  // This does not call goog.setCssNameMapping() because the JSCompiler
-  // requires that goog.setCssNameMapping() be called with an object literal.
-  goog.cssNameMapping_ = goog.global.CLOSURE_CSS_NAME_MAPPING;
-}
-
-
-/**
- * Gets a localized message.
- *
- * This function is a compiler primitive. If you give the compiler a localized
- * message bundle, it will replace the string at compile-time with a localized
- * version, and expand goog.getMsg call to a concatenated string.
- *
- * Messages must be initialized in the form:
- * <code>
- * var MSG_NAME = goog.getMsg('Hello {$placeholder}', {'placeholder': 'world'});
- * </code>
- *
- * @param {string} str Translatable string, places holders in the form {$foo}.
- * @param {Object=} opt_values Map of place holder name to value.
- * @return {string} message with placeholders filled.
- */
-goog.getMsg = function(str, opt_values) {
-  if (opt_values) {
-    str = str.replace(/\{\$([^}]+)}/g, function(match, key) {
-      return key in opt_values ? opt_values[key] : match;
-    });
-  }
-  return str;
-};
-
-
-/**
- * Gets a localized message. If the message does not have a translation, gives a
- * fallback message.
- *
- * This is useful when introducing a new message that has not yet been
- * translated into all languages.
- *
- * This function is a compiler primitive. Must be used in the form:
- * <code>var x = goog.getMsgWithFallback(MSG_A, MSG_B);</code>
- * where MSG_A and MSG_B were initialized with goog.getMsg.
- *
- * @param {string} a The preferred message.
- * @param {string} b The fallback message.
- * @return {string} The best translated message.
- */
-goog.getMsgWithFallback = function(a, b) {
-  return a;
-};
-
-
-/**
- * Exposes an unobfuscated global namespace path for the given object.
- * Note that fields of the exported object *will* be obfuscated, unless they are
- * exported in turn via this function or goog.exportProperty.
- *
- * Also handy for making public items that are defined in anonymous closures.
- *
- * ex. goog.exportSymbol('public.path.Foo', Foo);
- *
- * ex. goog.exportSymbol('public.path.Foo.staticFunction', Foo.staticFunction);
- *     public.path.Foo.staticFunction();
- *
- * ex. goog.exportSymbol('public.path.Foo.prototype.myMethod',
- *                       Foo.prototype.myMethod);
- *     new public.path.Foo().myMethod();
- *
- * @param {string} publicPath Unobfuscated name to export.
- * @param {*} object Object the name should point to.
- * @param {Object=} opt_objectToExportTo The object to add the path to; default
- *     is goog.global.
- */
-goog.exportSymbol = function(publicPath, object, opt_objectToExportTo) {
-  goog.exportPath_(publicPath, object, opt_objectToExportTo);
-};
-
-
-/**
- * Exports a property unobfuscated into the object's namespace.
- * ex. goog.exportProperty(Foo, 'staticFunction', Foo.staticFunction);
- * ex. goog.exportProperty(Foo.prototype, 'myMethod', Foo.prototype.myMethod);
- * @param {Object} object Object whose static property is being exported.
- * @param {string} publicName Unobfuscated name to export.
- * @param {*} symbol Object the name should point to.
- */
-goog.exportProperty = function(object, publicName, symbol) {
-  object[publicName] = symbol;
-};
-
-
-/**
- * Inherit the prototype methods from one constructor into another.
- *
- * Usage:
- * <pre>
- * function ParentClass(a, b) { }
- * ParentClass.prototype.foo = function(a) { };
- *
- * function ChildClass(a, b, c) {
- *   ChildClass.base(this, 'constructor', a, b);
- * }
- * goog.inherits(ChildClass, ParentClass);
- *
- * var child = new ChildClass('a', 'b', 'see');
- * child.foo(); // This works.
- * </pre>
- *
- * @param {Function} childCtor Child class.
- * @param {Function} parentCtor Parent class.
- */
-goog.inherits = function(childCtor, parentCtor) {
-  /** @constructor */
-  function tempCtor() {};
-  tempCtor.prototype = parentCtor.prototype;
-  childCtor.superClass_ = parentCtor.prototype;
-  childCtor.prototype = new tempCtor();
-  /** @override */
-  childCtor.prototype.constructor = childCtor;
-
-  /**
-   * Calls superclass constructor/method.
-   *
-   * This function is only available if you use goog.inherits to
-   * express inheritance relationships between classes.
-   *
-   * NOTE: This is a replacement for goog.base and for superClass_
-   * property defined in childCtor.
-   *
-   * @param {!Object} me Should always be "this".
-   * @param {string} methodName The method name to call. Calling
-   *     superclass constructor can be done with the special string
-   *     'constructor'.
-   * @param {...*} var_args The arguments to pass to superclass
-   *     method/constructor.
-   * @return {*} The return value of the superclass method/constructor.
-   */
-  childCtor.base = function(me, methodName, var_args) {
-    var args = Array.prototype.slice.call(arguments, 2);
-    return parentCtor.prototype[methodName].apply(me, args);
-  };
-};
-
-
-/**
- * Call up to the superclass.
- *
- * If this is called from a constructor, then this calls the superclass
- * constructor with arguments 1-N.
- *
- * If this is called from a prototype method, then you must pass the name of the
- * method as the second argument to this function. If you do not, you will get a
- * runtime error. This calls the superclass' method with arguments 2-N.
- *
- * This function only works if you use goog.inherits to express inheritance
- * relationships between your classes.
- *
- * This function is a compiler primitive. At compile-time, the compiler will do
- * macro expansion to remove a lot of the extra overhead that this function
- * introduces. The compiler will also enforce a lot of the assumptions that this
- * function makes, and treat it as a compiler error if you break them.
- *
- * @param {!Object} me Should always be "this".
- * @param {*=} opt_methodName The method name if calling a super method.
- * @param {...*} var_args The rest of the arguments.
- * @return {*} The return value of the superclass method.
- * @suppress {es5Strict} This method can not be used in strict mode, but
- *     all Closure Library consumers must depend on this file.
- */
-goog.base = function(me, opt_methodName, var_args) {
-  var caller = arguments.callee.caller;
-
-  if (goog.STRICT_MODE_COMPATIBLE || (goog.DEBUG && !caller)) {
-    throw Error('arguments.caller not defined.  goog.base() cannot be used ' +
-                'with strict mode code. See ' +
-                'http://www.ecma-international.org/ecma-262/5.1/#sec-C');
-  }
-
-  if (caller.superClass_) {
-    // This is a constructor. Call the superclass constructor.
-    return caller.superClass_.constructor.apply(
-        me, Array.prototype.slice.call(arguments, 1));
-  }
-
-  var args = Array.prototype.slice.call(arguments, 2);
-  var foundCaller = false;
-  for (var ctor = me.constructor;
-       ctor; ctor = ctor.superClass_ && ctor.superClass_.constructor) {
-    if (ctor.prototype[opt_methodName] === caller) {
-      foundCaller = true;
-    } else if (foundCaller) {
-      return ctor.prototype[opt_methodName].apply(me, args);
-    }
-  }
-
-  // If we did not find the caller in the prototype chain, then one of two
-  // things happened:
-  // 1) The caller is an instance method.
-  // 2) This method was not called by the right caller.
-  if (me[opt_methodName] === caller) {
-    return me.constructor.prototype[opt_methodName].apply(me, args);
-  } else {
-    throw Error(
-        'goog.base called from a method of one name ' +
-        'to a method of a different name');
-  }
-};
-
-
-/**
- * Allow for aliasing within scope functions.  This function exists for
- * uncompiled code - in compiled code the calls will be inlined and the aliases
- * applied.  In uncompiled code the function is simply run since the aliases as
- * written are valid JavaScript.
- *
- * MOE:begin_intracomment_strip
- * See the goog.scope document at http://go/goog.scope
- * MOE:end_intracomment_strip
- *
- * @param {function()} fn Function to call.  This function can contain aliases
- *     to namespaces (e.g. "var dom = goog.dom") or classes
- *     (e.g. "var Timer = goog.Timer").
- */
-goog.scope = function(fn) {
-  fn.call(goog.global);
-};
-
-
-/*
- * To support uncompiled, strict mode bundles that use eval to divide source
- * like so:
- *    eval('someSource;//# sourceUrl sourcefile.js');
- * We need to export the globally defined symbols "goog" and "COMPILED".
- * Exporting "goog" breaks the compiler optimizations, so we required that
- * be defined externally.
- * NOTE: We don't use goog.exportSymbol here because we don't want to trigger
- * extern generation when that compiler option is enabled.
- */
-if (!COMPILED) {
-  goog.global['COMPILED'] = COMPILED;
-}
-
-
-// MOE:begin_strip
-
-// The section between this token and the end token below will be stripped
-// automatically by the open source release scripts.  Please leave in place.
-
-//==============================================================================
-// Extending Function
-//==============================================================================
-
-
-/**
- * @define {boolean} Whether to extend Function.prototype.
- *     Use --define='goog.MODIFY_FUNCTION_PROTOTYPES=false' to change.
- */
-goog.define('goog.MODIFY_FUNCTION_PROTOTYPES', true);
-
-if (goog.MODIFY_FUNCTION_PROTOTYPES) {
-  /**
-   * An alias to the {@link goog.bind()} global function. Deprecated: use
-   * goog.bind instead.
-   *
-   * Usage:
-   * var g = f.bind(obj, arg1, arg2);
-   * g(arg3, arg4);
-   *
-   * @param {Object|undefined} selfObj Specifies the object to which this should
-   *     point when the function is run. If the value is null or undefined, it
-   *     will default to the global object.
-   * @param {...*} var_args Additional arguments that are partially applied to
-   *     fn.
-   * @return {!Function} A partially-applied form of the Function on which
-   *     bind() was invoked as a method.
-   * @suppress {duplicate}
-   */
-  Function.prototype.bind =
-      Function.prototype.bind || function(selfObj, var_args) {
-    if (arguments.length > 1) {
-      var args = Array.prototype.slice.call(arguments, 1);
-      args.unshift(this, selfObj);
-      return goog.bind.apply(null, args);
-    } else {
-      return goog.bind(this, selfObj);
-    }
-  };
-
-
-  /**
-   * An alias to the {@link goog.partial()} static function.
-   *
-   * Usage:
-   * var g = f.partial(arg1, arg2);
-   * g(arg3, arg4);
-   *
-   * @param {...*} var_args Additional arguments that are partially applied to
-   *     fn.
-   * @return {!Function} A partially-applied form of the function partial() was
-   *     invoked as a method of.
-   * @deprecated Use the static function goog.partial instead.
-   */
-  Function.prototype.partial = function(var_args) {
-    var args = Array.prototype.slice.call(arguments);
-    args.unshift(this, null);
-    return goog.bind.apply(null, args);
-  };
-
-
-  /**
-   * Inherit the prototype methods from one constructor into another.
-   * @param {Function} parentCtor Parent class.
-   * @see goog.inherits
-   * @deprecated Use the static function goog.inherits instead.
-   */
-  Function.prototype.inherits = function(parentCtor) {
-    goog.inherits(this, parentCtor);
-  };
-
-
-  /**
-   * Mixes in an object's properties and methods into the callee's prototype.
-   * Basically mixin based inheritance, thus providing an alternative method for
-   * adding properties and methods to a class' prototype.
-   *
-   * <pre>
-   * function X() {}
-   * X.mixin({
-   *   one: 1,
-   *   two: 2,
-   *   three: 3,
-   *   doit: function() { return this.one + this.two + this.three; }
-   * });
-   *
-   * function Y() {}
-   * Y.mixin(X.prototype);
-   * Y.prototype.four = 15;
-   * Y.prototype.doit2 = function() { return this.doit() + this.four; }
-   *
-   * // or
-   *
-   * function Y() {}
-   * Y.inherits(X);
-   * Y.mixin({
-   *   one: 10,
-   *   four: 15,
-   *   doit2: function() { return this.doit() + this.four; }
-   * });
-   * </pre>
-   *
-   * @param {Object} source from which to copy properties.
-   * @see goog.mixin
-   * @deprecated Use the static function goog.object.extend instead.
-   */
-  Function.prototype.mixin = function(source) {
-    goog.mixin(this.prototype, source);
-  };
-}
-
-// MOE:end_strip
-
-//==============================================================================
-// goog.defineClass implementation
-//==============================================================================
-
-/**
- * Creates a restricted form of a Closure "class":
- *   - from the compiler's perspective, the instance returned from the
- *     constructor is sealed (no new properties may be added).  This enables
- *     better checks.
- *   - the compiler will rewrite this definition to a form that is optimal
- *     for type checking and optimization (initially this will be a more
- *     traditional form).
- *
- * @param {Function} superClass The superclass, Object or null.
- * @param {goog.defineClass.ClassDescriptor} def
- *     An object literal describing the
- *     the class.  It may have the following properties:
- *     "constructor": the constructor function
- *     "statics": an object literal containing methods to add to the constructor
- *        as "static" methods or a function that will receive the constructor
- *        function as its only parameter to which static properties can
- *        be added.
- *     all other properties are added to the prototype.
- * @return {!Function} The class constructor.
- */
-goog.defineClass = function(superClass, def) {
-  // TODO(johnlenz): consider making the superClass an optional parameter.
-  var constructor = def.constructor;
-  var statics = def.statics;
-  // Wrap the constructor prior to setting up the prototype and static methods.
-  if (!constructor || constructor == Object.prototype.constructor) {
-    constructor = function() {
-      throw Error('cannot instantiate an interface (no constructor defined).');
-    };
-  }
-
-  var cls = goog.defineClass.createSealingConstructor_(constructor, superClass);
-  if (superClass) {
-    goog.inherits(cls, superClass);
-  }
-
-  // Remove all the properties that should not be copied to the prototype.
-  delete def.constructor;
-  delete def.statics;
-
-  goog.defineClass.applyProperties_(cls.prototype, def);
-  if (statics != null) {
-    if (statics instanceof Function) {
-      statics(cls);
-    } else {
-      goog.defineClass.applyProperties_(cls, statics);
-    }
-  }
-
-  return cls;
-};
-
-
-/**
- * @typedef {
- *     !Object|
- *     {constructor:!Function}|
- *     {constructor:!Function, statics:(Object|function(Function):void)}}
- */
-goog.defineClass.ClassDescriptor;
-
-
-/**
- * @define {boolean} Whether the instances returned by
- * goog.defineClass should be sealed when possible.
- */
-goog.define('goog.defineClass.SEAL_CLASS_INSTANCES', goog.DEBUG);
-
-
-/**
- * If goog.defineClass.SEAL_CLASS_INSTANCES is enabled and Object.seal is
- * defined, this function will wrap the constructor in a function that seals the
- * results of the provided constructor function.
- *
- * @param {!Function} ctr The constructor whose results maybe be sealed.
- * @param {Function} superClass The superclass constructor.
- * @return {!Function} The replacement constructor.
- * @private
- */
-goog.defineClass.createSealingConstructor_ = function(ctr, superClass) {
-  if (goog.defineClass.SEAL_CLASS_INSTANCES &&
-      Object.seal instanceof Function) {
-    // Don't seal subclasses of unsealable-tagged legacy classes.
-    if (superClass && superClass.prototype &&
-        superClass.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_]) {
-      return ctr;
-    }
-    /** @this {*} */
-    var wrappedCtr = function() {
-      // Don't seal an instance of a subclass when it calls the constructor of
-      // its super class as there is most likely still setup to do.
-      var instance = ctr.apply(this, arguments) || this;
-      instance[goog.UID_PROPERTY_] = instance[goog.UID_PROPERTY_];
-      if (this.constructor === wrappedCtr) {
-        Object.seal(instance);
-      }
-      return instance;
-    };
-    return wrappedCtr;
-  }
-  return ctr;
-};
-
-
-// TODO(johnlenz): share these values with the goog.object
-/**
- * The names of the fields that are defined on Object.prototype.
- * @type {!Array.<string>}
- * @private
- * @const
- */
-goog.defineClass.OBJECT_PROTOTYPE_FIELDS_ = [
-  'constructor',
-  'hasOwnProperty',
-  'isPrototypeOf',
-  'propertyIsEnumerable',
-  'toLocaleString',
-  'toString',
-  'valueOf'
-];
-
-
-// TODO(johnlenz): share this function with the goog.object
-/**
- * @param {!Object} target The object to add properties to.
- * @param {!Object} source The object to copy properites from.
- * @private
- */
-goog.defineClass.applyProperties_ = function(target, source) {
-  // TODO(johnlenz): update this to support ES5 getters/setters
-
-  var key;
-  for (key in source) {
-    if (Object.prototype.hasOwnProperty.call(source, key)) {
-      target[key] = source[key];
-    }
-  }
-
-  // For IE the for-in-loop does not contain any properties that are not
-  // enumerable on the prototype object (for example isPrototypeOf from
-  // Object.prototype) and it will also not include 'replace' on objects that
-  // extend String and change 'replace' (not that it is common for anyone to
-  // extend anything except Object).
-  for (var i = 0; i < goog.defineClass.OBJECT_PROTOTYPE_FIELDS_.length; i++) {
-    key = goog.defineClass.OBJECT_PROTOTYPE_FIELDS_[i];
-    if (Object.prototype.hasOwnProperty.call(source, key)) {
-      target[key] = source[key];
-    }
-  }
-};
-
-
-/**
- * Sealing classes breaks the older idiom of assigning properties on the
- * prototype rather than in the constructor.  As such, goog.defineClass
- * must not seal subclasses of these old-style classes until they are fixed.
- * Until then, this marks a class as "broken", instructing defineClass
- * not to seal subclasses.
- * @param {!Function} ctr The legacy constructor to tag as unsealable.
- */
-goog.tagUnsealableClass = function(ctr) {
-  if (!COMPILED && goog.defineClass.SEAL_CLASS_INSTANCES) {
-    ctr.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_] = true;
-  }
-};
-
-
-/**
- * Name for unsealable tag property.
- * @const @private {string}
- */
-goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_ = 'goog_defineClass_legacy_unsealable';
diff --git a/e2e-test/module.sample.js b/e2e-test/module.sample.js
deleted file mode 100644
index 3b0cea7..0000000
--- a/e2e-test/module.sample.js
+++ /dev/null
@@ -1,7 +0,0 @@
-goog.module('my.module');
-
-exports = {
-  greet: function() {
-    return 'hello world';
-  }
-};
diff --git a/e2e-test/module.spec.js b/e2e-test/module.spec.js
deleted file mode 100644
index 9971656..0000000
--- a/e2e-test/module.spec.js
+++ /dev/null
@@ -1,9 +0,0 @@
-goog.module('my.test');
-
-var mod = goog.require('my.module');
-
-describe('goog.module based tests', function() {
-  it('should load modules', function() {
-    expect(mod.greet()).toBe('hello world');
-  });
-});
diff --git a/karma.conf.js b/karma.conf.js
deleted file mode 100644
index 07fe023..0000000
--- a/karma.conf.js
+++ /dev/null
@@ -1,17 +0,0 @@
-// Load the preprocessor directly.
-var googmodule = require('./lib/googmodule.js');
-
-module.exports = function(config) {
-  config.set({
-    frameworks: ['jasmine'],
-    preprocessors: {'**/*.js': ['googmodule']},
-    files: [
-      'e2e-test/base.js',
-      'e2e-test/*.sample.js',
-      'e2e-test/*.spec.js'
-    ],
-    plugins: ['karma-jasmine', googmodule],
-    browsers: process.env.TRAVIS ? ['Firefox'] : ['Chrome'],
-    reporters: ['dots'],
-  });
-};