Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 1c989ca2a15285de8c1720fa2b1d0887e46b153f
      
https://github.com/WebKit/WebKit/commit/1c989ca2a15285de8c1720fa2b1d0887e46b153f
  Author: Wenson Hsieh <wenson_hs...@apple.com>
  Date:   2024-07-06 (Sat, 06 Jul 2024)

  Changed paths:
    M Source/WebCore/dom/Document.h
    M Source/WebCore/html/HTMLMediaElement.h
    M Source/WebKit/UIProcess/Cocoa/WebPageProxyCocoa.mm
    M Source/WebKit/WebProcess/WebPage/WebPage.cpp
    M Source/WebKit/WebProcess/WebPage/WebPage.h
    M Source/WebKit/WebProcess/WebPage/WebPage.messages.in
    M Tools/TestWebKitAPI/Tests/WebKitCocoa/VideoControlsManager.mm
    M Tools/TestWebKitAPI/Tests/WebKitCocoa/large-videos-with-audio.html

  Log Message:
  -----------
  [Cocoa] Fall back to playing the largest video in the main frame if there's 
no actively controlled element
https://bugs.webkit.org/show_bug.cgi?id=276263
rdar://131185180

Reviewed by Tim Horton.

Augment `playPredominantOrNowPlayingMediaSession` so that it additionally 
detects and plays the
largest video element in the viewport, in the absence of any active Now Playing 
session.

* Source/WebCore/dom/Document.h:
* Source/WebCore/html/HTMLMediaElement.h:
* Source/WebKit/UIProcess/Cocoa/WebPageProxyCocoa.mm:
(WebKit::WebPageProxy::playPredominantOrNowPlayingMediaSession):
* Source/WebKit/WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::startPlayingPredominantVideo):

Begin playing the largest (by area) video in the main frame that isn't already 
playing. Use this as
a fallback, only when no other video is being controlled.

* Source/WebKit/WebProcess/WebPage/WebPage.h:
* Source/WebKit/WebProcess/WebPage/WebPage.messages.in:
* Tools/TestWebKitAPI/Tests/WebKitCocoa/VideoControlsManager.mm:
(-[VideoControlsManagerTestWebView waitForVideoToPlay]):
(-[VideoControlsManagerTestWebView waitForVideoToPlay:]):
(-[VideoControlsManagerTestWebView isVideoPaused:]):
(-[VideoControlsManagerTestWebView waitForVideoToPause]):
(TestWebKitAPI::TEST(VideoControlsManager, StartPlayingLargestVideoInViewport)):
* Tools/TestWebKitAPI/Tests/WebKitCocoa/large-videos-with-audio.html:

Add an API test to exercise the change — only the first video (out of the three 
in the page) should
begin playing, since it covers most of the visible viewport.

Canonical link: https://commits.webkit.org/280710@main



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