Fix animationFrameRequest for dartium.

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

Index: tools/dom/templates/html/impl/impl_Window.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Window.darttemplate b/tools/dom/templates/html/impl/impl_Window.darttemplate
index fe4db3d7f55beab64cb9092d47f6abb247b0d6c4..9563abb24e04da5fb4d8c5fd38f3dee43ac43a08 100644
--- a/tools/dom/templates/html/impl/impl_Window.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Window.darttemplate
@@ -187,6 +187,8 @@ $if DART2JS
     JS('void', '#.location = #', this, value);
   }
 
+$endif
+
   /**
    * Called to draw an animation frame and then request the window to repaint
    * after [callback] has finished (creating the animation).
@@ -205,7 +207,9 @@ $if DART2JS
    */
   @DomName('Window.requestAnimationFrame')
   int requestAnimationFrame(FrameRequestCallback callback) {
+$if DART2JS
     _ensureRequestAnimationFrame();
+$endif
     if (identical(Zone.current, Zone.ROOT)) {
       return _requestAnimationFrame(callback);
     }
@@ -240,6 +244,7 @@ $if DART2JS
    * * [Window.cancelAnimationFrame](https://developer.mozilla.org/en-US/docs/Web/API/Window.cancelAnimationFrame)
    *   from MDN.
    */
+  @DomName('Window.cancelAnimationFrame')
   void cancelAnimationFrame(int id) {
     _ensureRequestAnimationFrame();
     var task = AnimationFrameTask._tasks.remove(id);
@@ -251,6 +256,7 @@ $if DART2JS
     task.cancel(this);
   }
 
+$if DART2JS
   @JSName('requestAnimationFrame')
   int _requestAnimationFrame(FrameRequestCallback callback) native;
 
@@ -301,28 +307,6 @@ $if DART2JS
   /// The debugging console for this window.
   @DomName('Window.console')
   Console get console => Console._safeConsole;
-
-$else
-  /**
-   * Called to draw an animation frame and then request the window to repaint
-   * after [callback] has finished (creating the animation).
-   *
-   * Use this method only if you need to later call [cancelAnimationFrame]. If
-   * not, the preferred Dart idiom is to set animation frames by calling
-   * [animationFrame], which returns a Future.
-   *
-   * Returns a non-zero valued integer to represent the request id for this
-   * request. This value only needs to be saved if you intend to call
-   * [cancelAnimationFrame] so you can specify the particular animation to
-   * cancel.
-   *
-   * Note: The supplied [callback] needs to call [requestAnimationFrame] again
-   * for the animation to continue.
-   */
-  @DomName('Window.requestAnimationFrame')
-  int requestAnimationFrame(FrameRequestCallback callback) {
-    return _requestAnimationFrame(_wrapZone(callback));
-  }
 $endif
 
   /**