Rename regexp methods to getters.

lib/compiler/implementation/lib/string_helper.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class StringMatch implements Match {
-  const StringMatch(int this._start,
+  const StringMatch(int this.start,
                     String this.str,
                     String this.pattern);
 
-  int start() => _start;
-  int end() => _start + pattern.length;
+  int get end => start + pattern.length;
   String operator[](int g) => group(g);
-  int groupCount() => 0;
+  int get groupCount => 0;
 
   String group(int group_) {
     if (group_ != 0) {
       throw new IndexOutOfRangeException(group_);
     }
     return pattern;
   }
 
   List<String> groups(List<int> groups_) {
     List<String> result = new List<String>();
     for (int g in groups_) {
       result.add(group(g));
     }
     return result;
   }
 
-  final int _start;
+  final int start;
   final String str;
   final String pattern;
 }
 
 List<Match> allMatchesInStringUnchecked(String needle, String haystack) {
   // Copied from StringBase.allMatches in
   // ../../../runtime/lib/string.dart
   List<Match> result = new List<Match>();
   int length = haystack.length;
   int patternLength = needle.length;
@@ skipping 89 matching lines @@
     var re = regExpGetNative(pattern);
     return JS('List', r'#.split(#)', receiver, re);
   } else {
     throw "StringImplementation.split(Pattern) UNIMPLEMENTED";
   }
 }
 
 stringJoinUnchecked(array, separator) {
   return JS('String', r'#.join(#)', array, separator);
 }