Web Animations: Plumb compositor group id through animation creation and start/finish notifications

public/platform/WebCompositorSupport.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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 #ifndef WebCompositorSupport_h
 #define WebCompositorSupport_h
 
+#define WEB_COMPOSITOR_SUPPORT_CREATE_ANIMATION_SUPPORTS_GROUP 1
+
 #include "WebCommon.h"
 #include "WebCompositorAnimation.h"
 #include "WebCompositorAnimationCurve.h"
 #include "WebFloatPoint.h"
 #include "WebLayerTreeView.h"
 #include "WebScrollbar.h"
 #include "WebScrollbarThemePainter.h"
 
 namespace blink {
 
@@ skipping 36 matching lines @@
 
     virtual WebNinePatchLayer* createNinePatchLayer() { return 0; }
 
     // The ownership of the WebScrollbarThemeGeometry pointer is passed to Chromium.
     virtual WebScrollbarLayer* createScrollbarLayer(WebScrollbar*, WebScrollbarThemePainter, WebScrollbarThemeGeometry*) { return 0; }
 
     virtual WebScrollbarLayer* createSolidColorScrollbarLayer(WebScrollbar::Orientation, int thumbThickness, int trackStart, bool isLeftSideVerticalScrollbar) { return 0; }
 
     // Animation ----------------------------------------------------
 
-    virtual WebCompositorAnimation* createAnimation(const WebCompositorAnimationCurve&, WebCompositorAnimation::TargetProperty, int animationId = 0) { return 0; }
+    virtual WebCompositorAnimation* createAnimation(const WebCompositorAnimationCurve&, WebCompositorAnimation::TargetProperty, int groupId = 0, int animationId = 0) { return 0; }
 
     virtual WebFilterAnimationCurve* createFilterAnimationCurve() { return 0; }
 
     virtual WebFloatAnimationCurve* createFloatAnimationCurve() { return 0; }
 
     virtual WebScrollOffsetAnimationCurve* createScrollOffsetAnimationCurve(WebFloatPoint targetValue, WebCompositorAnimationCurve::TimingFunctionType) { return 0; }
 
     virtual WebTransformAnimationCurve* createTransformAnimationCurve() { return 0; }
 
     virtual WebTransformOperations* createTransformOperations() { return 0; }
 
     virtual WebFilterOperations* createFilterOperations() { return 0; }
 
 protected:
     virtual ~WebCompositorSupport() { }
 };
 
 }
 
 #endif // WebCompositorSupport_h