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

cc/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_PROXY_H_
 #define CC_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/time.h"
-#include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
+#include "skia/ext/refptr.h"
+#include "third_party/skia/include/core/SkPicture.h"
 
 namespace gfx {
 class Rect;
 class Vector2d;
 }
 
 namespace cc {
 
 class Thread;
 struct RenderingStats;
@@ skipping 66 matching lines @@
 
     // Forces 3D commands on all contexts to wait for all previous SwapBuffers to finish before executing in the GPU
     // process.
     virtual void forceSerializeOnSwapBuffers() = 0;
 
     // Maximum number of sub-region texture updates supported for each commit.
     virtual size_t maxPartialTextureUpdates() const = 0;
 
     virtual void acquireLayerTextures() = 0;
 
+    virtual skia::RefPtr<SkPicture> capturePicture() = 0;
+
     // Testing hooks
     virtual bool commitPendingForTesting() = 0;
 
 protected:
     explicit Proxy(scoped_ptr<Thread> implThread);
     friend class DebugScopedSetImplThread;
     friend class DebugScopedSetMainThread;
     friend class DebugScopedSetMainThreadBlocked;
 
 private:
@@ skipping 28 matching lines @@
 class DebugScopedSetMainThreadBlocked {
 public:
     explicit DebugScopedSetMainThreadBlocked(Proxy*) { }
     ~DebugScopedSetMainThreadBlocked() { }
 };
 #endif
 
 }
 
 #endif  // CC_PROXY_H_