Update TextBreakIterator's API to support prior context

[litherum]

531ad5e

Update TextBreakIterator's API to support prior context
https://bugs.webkit.org/show_bug.cgi?id=257529
<rdar://problem/110051433>

Reviewed by Yusuke Suzuki.

Now that TextBreakIteratorCF and TextBreakIteratorICU both support prior context,
we can hook it up to TextBreakIterator's API.

After this patch, all the features supported by LazyLineBreakIterator are supported
by TextBreakIterator, so we can switch over from from using LazyLineBreakIterator to
TextBreakIterator whenever we want. However, before making the switch, we still need
to determine if there is a performance cost to doing so.

* Source/WTF/wtf/text/TextBreakIterator.cpp:
(WTF::TextBreakIterator::mapModeToBackingIterator):
(WTF::TextBreakIterator::TextBreakIterator):
* Source/WTF/wtf/text/TextBreakIterator.h:
(WTF::TextBreakIterator::setText):
(WTF::TextBreakIteratorCache::take):
(WTF::CachedTextBreakIterator::CachedTextBreakIterator):
* Source/WTF/wtf/text/cocoa/TextBreakIteratorInternalICUCocoa.cpp:
(WTF::TextBreakIterator::mapModeToBackingIterator):
(WTF::TextBreakIterator::TextBreakIterator):
* Source/WTF/wtf/text/icu/TextBreakIteratorICU.h:
(WTF::TextBreakIteratorICU::TextBreakIteratorICU):
* Source/WebCore/platform/graphics/ComplexTextController.cpp:
(WebCore::ComplexTextController::offsetForPosition):
(WebCore::ComplexTextController::collectComplexTextRuns):
* Source/WebCore/platform/graphics/ComposedCharacterClusterTextIterator.h:
(WebCore::ComposedCharacterClusterTextIterator::ComposedCharacterClusterTextIterator):
* Source/WebCore/rendering/RenderText.cpp:
(WebCore::RenderText::previousOffset const):
(WebCore::RenderText::previousOffsetForBackwardDeletion const):
(WebCore::RenderText::nextOffset const):
* Tools/TestWebKitAPI/Tests/WTF/TextBreakIterator.cpp:
(TestWebKitAPI::TEST):

Canonical link: https://commits.webkit.org/264772@main

c9de2e1

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	✅ 🛠 gtk
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🧪 gtk-wk2
✅ 🛠 🧪 jsc	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 api-gtk
✅ 🛠 🧪 jsc-arm64	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2	✅ 🛠 jsc-armv7
	✅ 🛠 tv-sim		✅ 🧪 jsc-armv7-tests
✅ 🛠 🧪 merge	✅ 🛠 watch		✅ 🛠 jsc-mips
	✅ 🛠 watch-sim		✅ 🧪 jsc-mips-tests

[webkit-early-warning-system]

EWS run on current version of this PR (hash c9de2e1)

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	✅ 🛠 gtk
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🧪 gtk-wk2
✅ 🛠 🧪 jsc	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 api-gtk
✅ 🛠 🧪 jsc-arm64	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2	✅ 🛠 jsc-armv7
	✅ 🛠 tv-sim		✅ 🧪 jsc-armv7-tests
✅ 🛠 🧪 merge	✅ 🛠 watch		✅ 🛠 jsc-mips
	✅ 🛠 watch-sim		✅ 🧪 jsc-mips-tests

[Constellation]

r=me

[webkit-commit-queue]

Committed 264772@main (531ad5e): https://commits.webkit.org/264772@main

Reviewed commits have been landed. Closing PR #14530 and removing active labels.