address review comments

lib/web_ui/lib/src/engine/dom.dart

@@ -1667,7 +1667,7 @@ Iterable<T> createDomListWrapper<T>(_DomList list) =>
 class DomIntl {}
 
 extension DomIntlExtension on DomIntl {
-  /// This is a Chrome-only API for segmenting text.
+  /// This is a V8-only API for segmenting text.
   ///
   /// See: https://code.google.com/archive/p/v8-i18n/wikis/BreakIterator.wiki
   external Object? get v8BreakIterator;

lib/web_ui/lib/src/engine/text/line_breaker.dart

@@ -49,9 +49,7 @@ abstract class LineBreakFragmenter extends TextFragmenter {
   }
 
   @override
-  List<LineBreakFragment> fragment() {
-    return _computeLineBreakFragments(text);
-  }
+  List<LineBreakFragment> fragment();
 }
 
 /// Flutter web's custom implementation of [LineBreakFragmenter].
@@ -64,7 +62,7 @@ class FWLineBreakFragmenter extends TextFragmenter implements LineBreakFragmente
   }
 }
 
-/// An implementation of [LineBreakFragmenter] that uses Chrome's
+/// An implementation of [LineBreakFragmenter] that uses V8's
 /// `v8BreakIterator` API to find line breaks in the given [text].
 class V8LineBreakFragmenter extends TextFragmenter implements LineBreakFragmenter {
   V8LineBreakFragmenter(super.text)