Contact emailselada...@chromium.org

Explainer
https://docs.google.com/document/d/1uI51R4YfFQtfiDTw1KfnLqzIu45OgxhYoUT7khlhmwQ/edit?usp=sharing

Specificationhttps://github.com/w3c/mediacapture-screen-share/pull/186/files

Summary

When getDisplayMedia() is called, the browser offers the user a choice of
display surfaces - tabs, windows and monitors. Using the displaySurface
constraint, the Web application may now hint to the browser if it prefers
that a certain surface type be more prominently offered to the user.


Blink componentBlink
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink>

Motivation

Less friction for user journeys that are tied to specific pairings between
the capturing Web application and a specific capture source type.


Initial public proposal
https://github.com/w3c/mediacapture-screen-share/issues/184

TAG reviewN/A. This is just an addition of a single flag to an existing
dictionary, following well-known patterns.

TAG review statusNot applicable

Risks


Interoperability and Compatibility

*Gecko*: Positive (https://github.com/mozilla/standards-positions/issues/642)
Jan-Ivar Bruaroey from Mozilla, and Youenn Fablet from Apple, have both
collaborated with us closely in shaping this PR. They have then approved
merging this PR into w3c/mediacapture-screen-share. This is implicit
support, so I'd consider it POSITIVE even though, as of the time of this
writing, the official request for position has not yet been answered.

*WebKit*: Positive (
https://lists.webkit.org/pipermail/webkit-dev/2022-May/032253.html)
Jan-Ivar Bruaroey from Mozilla, and Youenn Fablet from Apple, have both
collaborated with us closely in shaping this PR. They have then approved
merging this PR into w3c/mediacapture-screen-share. This is implicit
support, so I'd consider it POSITIVE even though, as of the time of this
writing, the official request for position has not yet been answered.

*Web developers*: Positive
See Appendix I of the internal design doc:
https://docs.google.com/document/d/1U_aNptMZuYFuFWu7leq43V3hqOQ9zMEumG3x413q2pY/edit#heading=h.693jj8mh4gkw

*Other signals*:

WebView application risks

N/A



Debuggability

N/A

Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
?No

Tracking bughttps://bugs.chromium.org/p/chromium/issues/detail?id=1224912

Estimated milestones

No milestones specified


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5186392840732672

This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.

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