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

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

 // 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.
 
 // WARNING: Do not edit - generated code.
 
-part of html;
+part of $LIBRARYNAME;
 $ANNOTATIONS
 class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
   factory $CLASSNAME(String type,
       {bool canBubble: true, bool cancelable: true, num alpha: 0, num beta: 0,
       num gamma: 0, bool absolute: false}) {
     var e = document.$dom_createEvent("DeviceOrientationEvent");
     e.$dom_initDeviceOrientationEvent(type, canBubble, cancelable, alpha, beta,
         gamma, absolute);
     return e;
   }
 $!MEMBERS
 }