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

tools/dom/templates/html/dartium/impl_Window.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 {
 
   /**
    * Executes a [callback] after the immediate execution stack has completed.
    *
    * This will cause the callback to be executed after all processing has
    * completed for the current event, but before any subsequent events.
    */
   void setImmediate(TimeoutHandler callback) {
@@ skipping 22 matching lines @@
   /// Checks if _setImmediate is supported.
   static bool get _supportsSetImmediate => false;
 
   /// Dartium stub for IE's setImmediate.
   void _setImmediate(void callback()) {
     throw new UnsupportedError('setImmediate is not supported');
   }
 
 $!MEMBERS
 }