Add Extension API to view source in debugger

[christiankrug]

It seems desirable for a browser extension that explores taint flows, to be able to jump to a certain line in the debugger. This is a feature request to add such an Extension API to the devtools API that will allow users to directly navigate to a specific line of code within the debugger from a browser extension.

• The existing devtools API is found here: https://github.com/SAP/project-foxhound/tree/2d2b8e3eef0f33d2bd3f7c6a44bb6ea2bb0e7dc1/browser/components/extensions

• None of the existing devtools APIs seem to be really fitting for this feature, but one that might fit is inspectedWindow, it already provides two functions as defined here:

  project-foxhound/browser/components/extensions/parent/ext-devtools-inspectedWindow.js

  Line 11 in 2d2b8e3

  this.devtools_inspectedWindow = class extends ExtensionAPI {

• The JS code to open a line in the debugger can be seen called here:
  

  project-foxhound/devtools/client/shared/view-source.js

  Line 115 in 2d2b8e3

  exports.viewSourceInDebugger = async function (

• or implemented in the debugger here:

  project-foxhound/devtools/client/debugger/panel.js

  Line 246 in 2d2b8e3

  async openSourceInDebugger({

[leeN]

hmmm, this seems like it might be interesting outside of foxhound, i.e., for mainline Firefox, so good idea :)