Add new strings for notRestoredReason for SharedWorker

[llannasatoll]

• At least two implementers are interested (and none opposed):
  • Chromium
  • Gecko
• Tests are written and can be reviewed and commented upon at:
  • https://chromium-review.googlesource.com/c/chromium/src/+/6642816
  • https://chromium-review.googlesource.com/c/chromium/src/+/6914636
• Implementation bugs are filed:
  • Chromium: https://g-issues.chromium.org/issues/431875857?pli=1&authuser=0
  • Gecko: https://bugzilla.mozilla.org/show_bug.cgi?id=2012939
  • WebKit: https://bugs.webkit.org/show_bug.cgi?id=306406
• Corresponding HTML AAM & ARIA in HTML issues & PRs: N/A
• MDN issue is filed: Missing values of NotRestoredReasonDetails reason mdn/content#42970
• The top of this comment includes a clear commit message to use.

The existing sharedworker string in notRestoredReason is a general back/forward cache block for pages with SharedWorker. To relax this, we are adding two specific strings:

• sharedworker-message: Evicts a page from back/forward cache if it receives a message from its SharedWorker while cached.
• sharedworker-with-no-active-client: Blocks or evicts a page if its connected SharedWorker no longer has active client. This ensures workers do not continue running without any active documents.

(See WHATWG Working Mode: Changes for more details.)

---

/nav-history-apis.html ( diff )

[llannasatoll]

@smaug---- @annevk @rakina could you help to review this change?

[annevk]

Wrapping is incorrect. See the guidelines and previous PR of this sort.

[llannasatoll]

Wrapping is incorrect. See the guidelines and previous PR of this sort.

Fixed the wrapping, sorry.

[annevk]

Thanks! I'll leave this to Mozilla to okay as per the prior PRs.

[zcorpan]

@llannasatoll do you want to file bugs for Gecko and WebKit? Also the Participation check is not green (if your employer has signed, maybe you need to make your org membership public).

[llannasatoll]

@llannasatoll do you want to file bugs for Gecko and WebKit? Also the Participation check is not green (if your employer has signed, maybe you need to make your org membership public).

Thanks! I've filed the bugs for Gecko and WebKit, and updated the PR description with the links. Please let me know if there are still any issues with it.