Reverting 17420 "Speech recognition APIs" which broke dartium.

tools/dom/templates/html/impl/impl_Event.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.
 
 // WARNING: Do not edit - generated code.
 
 part of html;
 
 $(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
   // In JS, canBubble and cancelable are technically required parameters to
   // init*Event. In practice, though, if they aren't provided they simply
   // default to false (since that's Boolean(undefined)).
   //
   // Contrary to JS, we default canBubble and cancelable to true, since that's
   // what people want most of the time anyway.
-  factory $CLASSNAME(String type,
-      [bool canBubble = true, bool cancelable = true]) {
-    return new Event.type('Event', type, canBubble, cancelable);
-  }
-
-  /**
-   * Creates a new Event object of the specified type.
-   *
-   * This is analogous to document.createEvent.
-   * Normally events should be created via their constructors, if available.
-   *
-   *     var e = new Event.type('MouseEvent', 'mousedown', true, true);
-   */
-  factory Event.type(String eventType, String name, [bool canBubble = true,
-      bool cancelable = true]) {
-    final Event e = document.$dom_createEvent(eventType);
-    e.$dom_initEvent(name, canBubble, cancelable);
-    return e;
-  }
+  factory $CLASSNAME(String type, [bool canBubble = true, bool cancelable = true]) =>
+      _$(CLASSNAME)FactoryProvider.create$CLASSNAME(type, canBubble, cancelable);
 $!MEMBERS
 }