Set the fragment scripting mode based on the context document

[noamr]

This applies, for example, when the fragment is created in a sandboxed iframe without allow-scripts (accessed from the outside by allow-same-origin).

Closes #12254

• At least two implementers are interested (and none opposed):
  • Chromium
  • Webkit (already works)
• Tests are written and can be reviewed and commented upon at:
  • Assert that scripting flag is propagated to contextual fragment web-platform-tests/wpt#58516
• Implementation bugs are filed:
  • Chromium: works fine
  • Gecko: https://bugzilla.mozilla.org/show_bug.cgi?id=2024145
  • WebKit: works fine
• The top of this comment includes a clear commit message to use.

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

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/parsing.html ( diff )