Make hasNext a getter instead of a method.

lib/compiler/implementation/lib/interceptors.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.
 
 #library('dart:_interceptors');
 
 #import('dart:coreimpl');
 
 add$1(var receiver, var value) {
   if (isJsArray(receiver)) {
@@ skipping 127 matching lines @@
   } else {
     return UNINTERCEPTED(a.compareTo(b));
   }
 }
 
 addAll(receiver, collection) {
   if (!isJsArray(receiver)) return UNINTERCEPTED(receiver.addAll(collection));
 
   // TODO(ahe): Use for-in when it is implemented correctly.
   var iterator = collection.iterator();
-  while (iterator.hasNext()) {
+  while (iterator.hasNext) {
     receiver.add(iterator.next());
   }
 }
 
 addLast(receiver, value) {
   if (!isJsArray(receiver)) return UNINTERCEPTED(receiver.addLast(value));
 
   checkGrowable(receiver, 'addLast');
   JS('Object', r'#.push(#)', receiver, value);
 }
@@ skipping 521 matching lines @@
   } else if (isJsArray(receiver)) {
     return getOrCreateCachedRuntimeType('List');
   } else {
     return UNINTERCEPTED(receiver.runtimeType);
   }
 }
 
 // TODO(lrn): These getters should be generated automatically for all
 // intercepted methods.
 get$toString(receiver) => () => toString(receiver);