CC AnimationHost: Fix ProgrammaticScrollAnimator detach scope.

third_party/WebKit/Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 188 matching lines @@
 
     void acceptLanguagesChanged();
 
     static void networkStateChanged(bool online);
 
     MemoryPurgeController& memoryPurgeController();
 
     void purgeMemory(MemoryPurgeMode, DeviceKind) override;
 
     DECLARE_TRACE();
+
+    void willCloseLayerTreeView();
     void willBeDestroyed();
 
 private:
     void initGroup();
 
     void setTimerAlignmentInterval(double);
 
     void setNeedsLayoutInAllFrames();
 
     // SettingsDelegate overrides.
@@ skipping 57 matching lines @@
     OwnPtrWillBeMember<FrameHost> m_frameHost;
 
     OwnPtrWillBeMember<MemoryPurgeController> m_memoryPurgeController;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT WillBeHeapSupplement<Page>;
 
 } // namespace blink
 
 #endif // Page_h