Implement a method to access the non-composited content root layer picture pile.

cc/single_thread_proxy.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_SINGLE_THREAD_PROXY_H_
 #define CC_SINGLE_THREAD_PROXY_H_
 
 #include <limits>
 
 #include "base/time.h"
 #include "cc/animation_events.h"
 #include "cc/layer_tree_host_impl.h"
 #include "cc/proxy.h"
 
 namespace cc {
 
 class LayerTreeHost;
+class PictureLayer;
+class PicturePileImpl;
 
 class SingleThreadProxy : public Proxy, LayerTreeHostImplClient {
 public:
     static scoped_ptr<Proxy> create(LayerTreeHost*);
     virtual ~SingleThreadProxy();
 
     // Proxy implementation
     virtual bool compositeAndReadback(void *pixels, const gfx::Rect&) OVERRIDE;
     virtual void startPageScaleAnimation(gfx::Vector2d targetOffset, bool useAnchor, float scale, base::TimeDelta duration) OVERRIDE;
     virtual void finishAllRendering() OVERRIDE;
@@ skipping 11 matching lines @@
     virtual void setNeedsRedraw() OVERRIDE;
     virtual void setDeferCommits(bool) OVERRIDE;
     virtual bool commitRequested() const OVERRIDE;
     virtual void mainThreadHasStoppedFlinging() OVERRIDE { }
     virtual void start() OVERRIDE;
     virtual void stop() OVERRIDE;
     virtual size_t maxPartialTextureUpdates() const OVERRIDE;
     virtual void acquireLayerTextures() OVERRIDE { }
     virtual void forceSerializeOnSwapBuffers() OVERRIDE;
     virtual bool commitPendingForTesting() OVERRIDE;
+    virtual scoped_refptr<PicturePileImpl> capturePicturePile(const PictureLayer* layer) OVERRIDE;
 
     // LayerTreeHostImplClient implementation
     virtual void didLoseOutputSurfaceOnImplThread() OVERRIDE { }
     virtual void onSwapBuffersCompleteOnImplThread() OVERRIDE;
     virtual void onVSyncParametersChanged(base::TimeTicks timebase, base::TimeDelta interval) OVERRIDE { }
     virtual void onCanDrawStateChanged(bool canDraw) OVERRIDE { }
     virtual void onHasPendingTreeStateChanged(bool havePendingTree) OVERRIDE;
     virtual void setNeedsRedrawOnImplThread() OVERRIDE;
     virtual void setNeedsCommitOnImplThread() OVERRIDE;
     virtual void setNeedsManageTilesOnImplThread() OVERRIDE;
@@ skipping 88 matching lines @@
     {
     }
 private:
     DebugScopedSetImplThread m_implThread;
     DebugScopedSetMainThreadBlocked m_mainThreadBlocked;
 };
 
 } // namespace cc
 
 #endif  // CC_SINGLE_THREAD_PROXY_H_