1782596 - [css-mediaqueries] make context-dependent color scheme propagation works in iframes (even cross-origin iframes)

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, defect)

Description

[Mozilla Apprentice]

A resolution was made for csswg-drafts/#7493.

[css-mediaqueries] Should prefers-color-scheme in iframes be context-dependent?

• RESOLVED: Context-dependent color scheme propagation works for iframes (including cross-origin) unless specifically restricted

Discussion.

Comment 1

[Daniel Holbert [:dholbert]]

(assuming emilio might want to take this, like bug 1782595, since it's his proposal and likely a small change. But feel free to dupe or reassign as-appropriate.)

Comment 2

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1782596 - Propagate preferred color-scheme to non-top frames. r=#layout,#style

The ColorSchemeMode::Preferred change doesn't make a difference (that
is, always use the preferred one), since when we only propagate from
top's embedder the embedder is chrome, which always has the preferred
color-scheme.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/caf2468b70be
Propagate preferred color-scheme to non-top frames. r=jwatt

Comment 4

[Web Platform Test Sync Bot (Matrix: #interop:mozilla.org)]

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/35546 for changes under testing/web-platform/tests

Comment 5

[Natalia Csoregi [:nataliaCs]]

Backed out for causing failures on browser_target_configuration_command_color_scheme.js

• backout: https://hg.mozilla.org/integration/autoland/rev/892d6f374125226e4758ac06fc76c1e89caacb03
• push: https://treeherder.mozilla.org/jobs?repo=autoland&selectedTaskRun=c9Gg8tzASV2Dndm4Q8UpbQ.0&revision=caf2468b70be8691d1531918cef2f3443d4adf68&group_state=expanded
• failure log: https://treeherder.mozilla.org/logviewer?job_id=388016373&repo=autoland&lineNumber=18349

Comment 6

[Web Platform Test Sync Bot (Matrix: #interop:mozilla.org)]

Upstream PR was closed without merging

Comment 7

[Norisz Fay [:noriszfay]]

Backout was merged to central: https://hg.mozilla.org/mozilla-central/rev/892d6f374125

Comment 8

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/495ffb27c683
Propagate preferred color-scheme to non-top frames. r=jwatt

Comment 9

[Marian-Vasile Laza]

https://hg.mozilla.org/mozilla-central/rev/495ffb27c683

Comment 10

[Web Platform Test Sync Bot (Matrix: #interop:mozilla.org)]

Upstream PR merged by moz-wptsync-bot