Free temporary GPU and memory resources held by inactive or hidden 2D canvases

Source/core/frame/Frame.h

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999-2001 Lars Knoll <knoll@kde.org>
  *                     1999-2001 Antti Koivisto <koivisto@kde.org>
  *                     2000-2001 Simon Hausmann <hausmann@kde.org>
  *                     2000-2001 Dirk Mueller <mueller@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
@@ skipping 141 matching lines @@
         FrameTree& tree() const;
         AnimationController& animation() const;
         InputMethodController& inputMethodController() const;
         FetchContext& fetchContext() const { return loader().fetchContext(); }
         ScriptController& script();
         SpellChecker& spellChecker() const;
 
         RenderView* contentRenderer() const; // Root of the render tree for the document contained in this frame.
         RenderPart* ownerRenderer() const; // Renderer for the element that contains this frame.
 
-        void dispatchVisibilityStateChangeEvent();
+        void didChangeVisibilityState();
 
         int64_t frameID() const { return m_frameInit->frameID(); }
 
         // FIXME: These should move to RemoteFrame once that exists.
         // RemotePlatformLayer is only ever set for Frames which exist in another process.
         void setRemotePlatformLayer(blink::WebLayer* remotePlatformLayer) { m_remotePlatformLayer = remotePlatformLayer; }
         blink::WebLayer* remotePlatformLayer() const { return m_remotePlatformLayer; }
 
     // ======== All public functions below this point are candidates to move out of Frame into another class. ========
 
@@ skipping 158 matching lines @@
 
     inline EventHandler& Frame::eventHandler() const
     {
         ASSERT(m_eventHandler);
         return *m_eventHandler;
     }
 
 } // namespace WebCore
 
 #endif // Frame_h