Convert DOM and HTML frog to dart2js.

lib/dom/templates/dom/frog/frog_dom.darttemplate

-// Copyright (c) 2011, 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.
-
-// DO NOT EDIT
-// Auto-generated Dart DOM library.
-
-#library("dom");
-
-$!GENERATED_DART_FILES
-#source('../src/EventListener.dart');
-#source('../src/KeyLocation.dart');
-#source('../src/KeyName.dart');
-#source('../src/ReadyState.dart');
-#source('../src/frog_DOMImplementation.dart');
-#source('../src/frog_DOMType.dart');
-#source('../src/frog_DOMTypeJs.dart');
-#source('../src/frog_FactoryProviders.dart');
-#source('../src/frog_IDBKeyRangeFactoryProvider.dart');
-#source('../src/frog_TypedArrayFactoryProvider.dart');
-#source('../src/_Collections.dart');
-#source('../src/_ListIterators.dart');
-#source('../src/_Lists.dart');
-
-// TODO(sra): What 'window' do we get in a worker?  Perhaps this
-// should return the interface type.
-DOMWindow get window() native "return window;";
-
-HTMLDocument get document() native "return document;";
-
-// TODO(vsm): Implement these.
-interface LayoutTestController {}
-LayoutTestController layoutTestController;
-
-spawnDomIsolate(Window targetWindow, String entryPoint) {
-  throw const NotImplementedException();
-}