Animations: Introduce compositor AnimationPlayer and AnimationTimeline.

Source/web/WebFrameWidgetImpl.h

 /*
  * Copyright (C) 2014 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
 #include "wtf/OwnPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace blink {
 class Frame;
 class Element;
 class LocalFrame;
 class Page;
 class DeprecatedPaintLayerCompositor;
 class UserGestureToken;
+class WebCompositorAnimationTimeline;
 class WebLayer;
 class WebLayerTreeView;
 class WebLocalFrameImpl;
 class WebMouseEvent;
 class WebMouseWheelEvent;
 class WebViewImpl;
 
 class WebFrameWidgetImpl final : public WebFrameWidget
     , public PageWidgetEventHandler
     , public RefCounted<WebFrameWidgetImpl> {
@@ skipping 54 matching lines @@
     Frame* focusedCoreFrame() const;
 
     // Returns the currently focused Element or null if no element has focus.
     Element* focusedElement() const;
 
     void scheduleAnimation();
 
     DeprecatedPaintLayerCompositor* compositor() const;
     void suppressInvalidations(bool enable);
     void setRootGraphicsLayer(GraphicsLayer*);
+    void attachCompositorAnimationTimeline(WebCompositorAnimationTimeline*);
+    void detachCompositorAnimationTimeline(WebCompositorAnimationTimeline*);
 
     void setVisibilityState(WebPageVisibilityState, bool) override;
 
     // Exposed for the purpose of overriding device metrics.
     void sendResizeEventAndRepaint();
 
     void updateMainFrameLayoutSize();
 
     void setIgnoreInputEvents(bool newValue);
 
@@ skipping 64 matching lines @@
     bool m_suppressNextKeypressEvent;
 
     bool m_ignoreInputEvents;
 
     static const WebInputEvent* m_currentInputEvent;
 };
 
 } // namespace blink
 
 #endif