Timer::stop can short-circuit in most cases

[rniwa]

741a55f

Timer::stop can short-circuit in most cases
https://bugs.webkit.org/show_bug.cgi?id=267746

Reviewed by Yusuke Suzuki and Darin Adler.

Add a fast path for when the timer isn't scheduled.

* Source/WebCore/platform/Timer.cpp:
(WebCore::TimerBase::stopSlowCase):
(WebCore::TimerBase::stop): Deleted.
* Source/WebCore/platform/Timer.h:
(WebCore::TimerBase::stop):

Canonical link: https://commits.webkit.org/273212@main

ac82580

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	🧪 wpe-wk2
✅ 🧪 webkitperl	❌ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🛠 gtk
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv-sim
	✅ 🛠 watch
✅ 🛠 🧪 unsafe-merge	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash ac82580)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	🧪 wpe-wk2
✅ 🧪 webkitperl	❌ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🛠 gtk
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv-sim
	✅ 🛠 watch
✅ 🛠 🧪 unsafe-merge	✅ 🛠 watch-sim

[Constellation]

r=me

[rniwa]

fast/events/ios/select-all-with-existing-selection.html seems to be a flaky test.

[webkit-commit-queue]

Committed 273212@main (741a55f): https://commits.webkit.org/273212@main

Reviewed commits have been landed. Closing PR #22955 and removing active labels.