Animations: Introduce compositor AnimationPlayer and AnimationTimeline.

Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 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 57 matching lines @@
 
 class DataObject;
 class Frame;
 class FullscreenController;
 class InputMethodContext;
 class LinkHighlight;
 class PopupContainer;
 class LayerCompositor;
 class UserGestureToken;
 class WebActiveGestureAnimation;
+class WebCompositorAnimationTimeline;
 class WebDevToolsAgentImpl;
 class WebLayerTreeView;
 class WebLocalFrameImpl;
 class WebImage;
 class WebPagePopupImpl;
 class WebPlugin;
 class WebSettingsImpl;
 
 struct WebSelectionBound;
 
@@ skipping 345 matching lines @@
         return m_currentInputEvent;
     }
 
     GraphicsLayer* rootGraphicsLayer();
     void setRootGraphicsLayer(GraphicsLayer*);
     void scheduleCompositingLayerSync();
     GraphicsLayerFactory* graphicsLayerFactory() const;
     LayerCompositor* compositor() const;
     void registerForAnimations(WebLayer*);
     void scheduleAnimation();
+    void setCompositorAnimationTimeline(WebCompositorAnimationTimeline*);
 
     virtual void setVisibilityState(WebPageVisibilityState, bool) override;
 
     PopupContainer* selectPopup() const { return m_selectPopup.get(); }
     bool hasOpenedPopup() const { return m_selectPopup || m_pagePopup; }
 
     // Returns true if the event leads to scrolling.
     static bool mapKeyCodeForScroll(
         int keyCode,
         ScrollDirection*,
@@ skipping 320 matching lines @@
 };
 
 DEFINE_TYPE_CASTS(WebViewImpl, WebWidget, widget, widget->isWebView(), widget.isWebView());
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 } // namespace blink
 
 #endif