[macOS] Unable to pause video playback in PiP mode

[jernoble]

f3a0304

[macOS] Unable to pause video playback in PiP mode
rdar://152192112
https://bugs.webkit.org/show_bug.cgi?id=294449

Reviewed by Eric Carlson.

From logging, it appears that the playback state of the WebContent process is becoming
out-of-sync with the cached playback state in the UIProcess. Without knowing exactly how
this synchronization failed, work around the issue by explicitly updating the cached
playback state whenever a play() or pause() command is issued by the UIProcess.

* Source/WebCore/platform/cocoa/PlaybackSessionModel.h:
(WTF::LogArgument<OptionSet<WebCore::PlaybackSessionModel::PlaybackState>>::toString):
* Source/WebCore/platform/cocoa/PlaybackSessionModelMediaElement.h:
* Source/WebCore/platform/cocoa/PlaybackSessionModelMediaElement.mm:
(WebCore::PlaybackSessionModelMediaElement::updateForEventName):
(WebCore::PlaybackSessionModelMediaElement::play):
(WebCore::PlaybackSessionModelMediaElement::pause):
(WebCore::PlaybackSessionModelMediaElement::updateRate):
* Source/WebCore/platform/mac/PlaybackSessionInterfaceMac.mm:
(WebCore::PlaybackSessionInterfaceMac::rateChanged):
* Source/WebCore/platform/mac/VideoPresentationInterfaceMac.mm:
(WebCore::VideoPresentationInterfaceMac::rateChanged):

Canonical link: https://commits.webkit.org/296219@main

4486277

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	⏳ 🧪 win-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🛠 wpe-cairo
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🛠 gtk
	✅ 🛠 vision	🧪 mac-AS-debug-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
✅ 🛠 🧪 merge	✅ 🧪 vision-wk2	✅ 🧪 mac-intel-wk2	✅ 🛠 playstation
	✅ 🛠 tv	✅ 🛠 mac-safer-cpp
	✅ 🛠 tv-sim
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

Starting EWS tests for 4486277. Live statuses available at the PR page, #46718

[webkit-early-warning-system]

EWS run on current version of this PR (hash 4486277)

Details

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	⏳ 🧪 win-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🛠 wpe-cairo
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🛠 gtk
	✅ 🛠 vision	🧪 mac-AS-debug-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
✅ 🛠 🧪 merge	✅ 🧪 vision-wk2	✅ 🧪 mac-intel-wk2	✅ 🛠 playstation
	✅ 🛠 tv	✅ 🛠 mac-safer-cpp
	✅ 🛠 tv-sim
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-commit-queue]

Committed 296219@main (f3a0304): https://commits.webkit.org/296219@main

Reviewed commits have been landed. Closing PR #46718 and removing active labels.