Renaming dart:html library from 'html' to 'dart.html'

tools/dom/templates/html/impl/impl_WheelEvent.darttemplate

 // 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.
 
-part of html;
+part of $LIBRARYNAME;
 
 $(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 
   factory WheelEvent(String type,
       {Window view, int deltaX: 0, int deltaY: 0,
       int detail: 0, int screenX: 0, int screenY: 0, int clientX: 0,
       int clientY: 0, int button: 0, bool canBubble: true,
       bool cancelable: true, bool ctrlKey: false, bool altKey: false,
       bool shiftKey: false, bool metaKey: false, EventTarget relatedTarget}) {
 
@@ skipping 179 matching lines @@
 $else
   @DomName('WheelEvent.deltaX')
   num get deltaX => $dom_wheelDeltaX;
   @DomName('WheelEvent.deltaY')
   num get deltaY => $dom_wheelDeltaY;
   @DomName('WheelEvent.deltaMode')
   int get deltaMode => 0;
 
 $endif
 }