Remove more () from getters.

runtime/lib/string_base.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.
 
 /**
  * [StringBase] contains common methods used by concrete String implementations,
  * e.g., OneByteString.
  */
 class StringBase {
 
@@ skipping 22 matching lines @@
     return _createFromCodePoints(objectArray);
   }
 
   static String _createFromCodePoints(ObjectArray<int> codePoints)
       native "StringBase_createFromCodePoints";
 
   String operator [](int index) native "String_charAt";
 
   int charCodeAt(int index) native "String_charCodeAt";
 
-  int get length() native "String_getLength";
+  int get length native "String_getLength";
 
   bool isEmpty() {
     return this.length === 0;
   }
 
   String concat(String other) native "String_concat";
 
   String toString() {
     return this;
   }
@@ skipping 425 matching lines @@
     for (int g in groups) {
       result.add(group(g));
     }
     return result;
   }
 
   final int _start;
   final String str;
   final String pattern;
 }