Make hasNext a getter instead of a method.

lib/compiler/implementation/lib/js_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.
 
 #library('dart:_js_helper');
 
 #import('dart:coreimpl');
 
 #source('constant_map.dart');
 #source('native_helper.dart');
@@ skipping 325 matching lines @@
 String S(value) {
   var res = value.toString();
   if (res is !String) throw new ArgumentError(value);
   return res;
 }
 
 class ListIterator<T> implements Iterator<T> {
   int i;
   List<T> list;
   ListIterator(List<T> this.list) : i = 0;
-  bool hasNext() => i < JS('int', r'#.length', list);
+  bool get hasNext => i < JS('int', r'#.length', list);
   T next() {
-    if (!hasNext()) throw new NoMoreElementsException();
+    if (!hasNext) throw new NoMoreElementsException();
     var value = JS('Object', r'#[#]', list, i);
     i += 1;
     return value;
   }
 }
 
 class Primitives {
   static int hashCodeSeed = 0;
 
   static int objectHashCode(object) {
@@ skipping 605 matching lines @@
 }
 
 
 /**
  * Called by generated code to build a map literal. [keyValuePairs] is
  * a list of key, value, key, value, ..., etc.
  */
 makeLiteralMap(List keyValuePairs) {
   Iterator iterator = keyValuePairs.iterator();
   Map result = new LinkedHashMap();
-  while (iterator.hasNext()) {
+  while (iterator.hasNext) {
     String key = iterator.next();
     var value = iterator.next();
     result[key] = value;
   }
   return result;
 }
 
 invokeClosure(Function closure,
               var isolate,
               int numberOfArguments,
@@ skipping 420 matching lines @@
     JS('void', r'#.runtimeTypeCache[#] = #', JS_CURRENT_ISOLATE(), key,
        runtimeType);
   }
   return runtimeType;
 }
 
 String getRuntimeTypeString(var object) {
   var typeInfo = JS('Object', r'#.builtin$typeInfo', object);
   return JS('String', r'#.runtimeType', typeInfo);
 }