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

tools/dom/templates/html/impl/impl_EventTarget.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;
 
 /**
  * Base class that supports listening for and dispatching browser events.
  *
  * Events can either be accessed by string name (using the indexed getter) or by
  * getters exposed by subclasses. Use the getters exposed by subclasses when
  * possible for better compile-time type checks.
  *
  * Using an indexed getter:
  *     events['mouseover'].add((e) => print("Mouse over!"));
@@ skipping 56 matching lines @@
  * [$dom_addEventListener], [$dom_dispatchEvent], and
  * [$dom_removeEventListener]) for compile-time type checks and a more concise
  * API.
  */
 $(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 
   @DomName('EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent')
   Events get on => new Events(this);
 $!MEMBERS
 }