Changing return type for getWordBoundary to TextRange

Author: gspencergoog

lib/ui/text.dart

@@ -1882,15 +1882,17 @@ class Paragraph extends NativeFieldWrapperClass2 {
   /// on both sides. In such cases, this method will return [offset, offset+1].
   /// Word boundaries are defined more precisely in Unicode Standard Annex #29
   /// http://www.unicode.org/reports/tr29/#Word_Boundaries
-  List<int> getWordBoundary(dynamic position) {
+  TextRange getWordBoundary(dynamic position) {
     // TODO(gspencergoog): have this take only a TextPosition once the framework
     // code is calling it with that.
+    List<int> boundary;
     if (position is TextPosition) {
-      return _getWordBoundary(position.offset);
+      boundary = _getWordBoundary(position.offset);
     } else {
       final int offset = position;
-      return _getWordBoundary(offset);
+      boundary = _getWordBoundary(offset);
     }
+    return TextRange(start: boundary[0], end: boundary[1]);
   }
   List<int> _getWordBoundary(int offset) native 'Paragraph_getWordBoundary';
 

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

@@ -281,27 +281,27 @@ class EngineParagraph implements ui.Paragraph {
   }
 
   @override
-  List<int> getWordBoundary(dynamic position) {
+  ui.TextRange getWordBoundary(dynamic position) {
     // TODO(gspencergoog): have this take only a TextPosition once the framework
     // code is calling it with that.
     if (position is ui.TextPosition) {
       ui.TextPosition textPosition = position;
       if (_plainText == null) {
-        return <int>[textPosition.offset, textPosition.offset];
+        return ui.TextRange(start: textPosition.offset, end: textPosition.offset);
       }
 
       final int start = WordBreaker.prevBreakIndex(_plainText, textPosition.offset);
       final int end = WordBreaker.nextBreakIndex(_plainText, textPosition.offset);
-      return <int>[start, end];
+      return ui.TextRange(start: start, end: end);
     }
 
     if (_plainText == null) {
-      return <int>[position, position];
+      return ui.TextRange(start: position, end: position);
     }
 
     final int start = WordBreaker.prevBreakIndex(_plainText, position);
     final int end = WordBreaker.nextBreakIndex(_plainText, position);
-    return <int>[start, end];
+    return ui.TextRange(start: start, end: end);
   }
 
   @override

lib/web_ui/lib/src/ui/text.dart

@@ -1250,7 +1250,7 @@ abstract class Paragraph {
   /// on both sides. In such cases, this method will return [offset, offset+1].
   /// Word boundaries are defined more precisely in Unicode Standard Annex #29
   /// http://www.unicode.org/reports/tr29/#Word_Boundaries
-  List<int> getWordBoundary(dynamic position);
+  TextRange getWordBoundary(dynamic position);
 
   /// Returns the [start, end] of the line at the given offset.
   ///