Making almost all dom_ methods private. Exceptions will be addressed in a later CL.

tools/dom/src/WrappedEvent.dart

 // Copyright (c) 2013, 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.
 
 part of dart.html;
 
 /**
  * Helper class to implement custom events which wrap DOM events.
  */
 class _WrappedEvent implements Event {
@@ skipping 16 matching lines @@
   bool get defaultPrevented => wrapped.defaultPrevented;
 
   int get eventPhase => wrapped.eventPhase;
 
   EventTarget get target => wrapped.target;
 
   int get timeStamp => wrapped.timeStamp;
 
   String get type => wrapped.type;
 
-  void $dom_initEvent(String eventTypeArg, bool canBubbleArg,
+  void _initEvent(String eventTypeArg, bool canBubbleArg,
       bool cancelableArg) {
     throw new UnsupportedError(
         'Cannot initialize this Event.');
   }
 
   void preventDefault() {
     wrapped.preventDefault();
   }
 
   void stopImmediatePropagation() {
     wrapped.stopImmediatePropagation();
   }
 
   void stopPropagation() {
     wrapped.stopPropagation();
   }
 }