Blink Compositor Animation: Introduce CompositorAnimationHost correctly.

third_party/WebKit/Source/web/WebPagePopupImpl.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:
  *
  *     * 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 20 matching lines @@
 #ifndef WebPagePopupImpl_h
 #define WebPagePopupImpl_h
 
 #include "core/page/PagePopup.h"
 #include "public/web/WebPagePopup.h"
 #include "web/PageWidgetDelegate.h"
 #include "wtf/RefCounted.h"
 
 namespace blink {
 
+class CompositorAnimationHost;
 class GraphicsLayer;
 class Page;
 class PagePopupChromeClient;
 class PagePopupClient;
 class WebLayerTreeView;
 class WebLayer;
 class WebViewImpl;
 class LocalDOMWindow;
 
 class WebPagePopupImpl final : public WebPagePopup,
@@ skipping 61 matching lines @@
   WebWidgetClient* m_widgetClient;
   WebViewImpl* m_webView;
   Persistent<Page> m_page;
   Persistent<PagePopupChromeClient> m_chromeClient;
   PagePopupClient* m_popupClient;
   bool m_closing;
 
   WebLayerTreeView* m_layerTreeView;
   WebLayer* m_rootLayer;
   GraphicsLayer* m_rootGraphicsLayer;
+  std::unique_ptr<CompositorAnimationHost> m_compositorAnimationHost;
   bool m_isAcceleratedCompositingActive;
 
   friend class WebPagePopup;
   friend class PagePopupChromeClient;
 };
 
 DEFINE_TYPE_CASTS(WebPagePopupImpl,
                   WebWidget,
                   widget,
                   widget->isPagePopup(),
                   widget.isPagePopup());
 // WebPagePopupImpl is the only implementation of PagePopup, so no
 // further checking required.
 DEFINE_TYPE_CASTS(WebPagePopupImpl, PagePopup, popup, true, true);
 
 }  // namespace blink
 #endif  // WebPagePopupImpl_h