Update ReadableStream compatibility in Safari

[AllanZhengYP]

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• Summarize your changes
• Data: link to resources that verify support information (such as browser's docs, changelogs, source control, bug trackers, and tests)
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According to Apple developer guide, ReadableStream is supported. Currently, this API is shown as not supported in MDN. The source of these changes come from Apple Developer Guide as below:

• ReadableStream interface: https://developer.apple.com/documentation/webkitjs/readablestream
• ReadableStream.cancel: https://developer.apple.com/documentation/webkitjs/readablestream/1629178-cancel
• ReadableStream.getReader: https://developer.apple.com/documentation/webkitjs/readablestream/1632243-getreader
• ReadableStream.locked: https://developer.apple.com/documentation/webkitjs/readablestream/1631657-locked
• ReadableStream.pipeThrough: https://developer.apple.com/documentation/webkitjs/readablestream/1630648-pipethrough
• ReadableStream.pipeTo: https://developer.apple.com/documentation/webkitjs/readablestream/1631507-pipeto
• ReadableStream.tee: https://developer.apple.com/documentation/webkitjs/readablestream/1777742-tee

Tested on safari 13 and safari_ios 13 with following cases:
https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=6670

[trivikr]

Also update the constructor on lines 148 and 151

[queengooborg]

Hey there, thanks for your PR! Unfortunately, the docs that you are basing the version numbers on don't actually refer to the Safari versions, and are inaccurate. As such, we will not be able to merge this PR as it is.

There's two ways we can proceed. One is to try to find all the actual versions through SauceLabs / BrowserStack / etc., and the other one is to set everything to true for now.

[AllanZhengYP]

@vinyldarkscratch Thank you for the advice. I just tested the ReadableStream apis(https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=6670) on real devices on SourceLabs and mobile. Here's the screenshot:

• desktop safari:
  
• mobile safari:
  

[AllanZhengYP]

@vinyldarkscratch Can you take a look at my changes? This is my first time contributing to this Repo. Let me know if I'm still missing anything

[queengooborg]

Don’t worry, I’ve requested a review for myself so I’ll check out your changes when I can! (I’m the only one in the office for my day job so I have to work double time.)

[AllanZhengYP]

@vinyldarkscratch Any more update is needed?

[queengooborg]

Hey again, sorry for the delays in my review! I've been caught up with a lot of projects regarding this repository, as well as being sick with the flu and preparing for Mozilla All Hands 2020, so I hadn't had much time to review PRs. I just got back to this, and was able to double-check the versions.

It appears that this API was specifically implemented in Safari 10.1 (which equates to Safari for iOS 10.3). Safari 10.0 doesn't have support. (Unfortunately SauceLabs doesn't distinguish the two versions well; the only way to change which one to use is the OS version.) Can we bump the version number to "10.1" for Safari Desktop, and "10.3" for Safari iOS?

[queengooborg]

Hey @AllanFly120, do you plan to return to this PR?

[queengooborg]

Marking this as inactive since we haven't heard back from you. If we don't hear back in another week, I'll go ahead and supersede this PR so we can get the changes going!

[queengooborg]

I went ahead and opened #5738 to continue the updates to the Safari data. Thank you for your PR!