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

cc/layer_tree_host.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_LAYER_TREE_HOST_H_
 #define CC_LAYER_TREE_HOST_H_
 
 #include <limits>
 
 #include "base/basictypes.h"
 #include "base/cancelable_callback.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "cc/animation_events.h"
 #include "cc/cc_export.h"
 #include "cc/layer_tree_host_client.h"
 #include "cc/layer_tree_host_common.h"
 #include "cc/layer_tree_settings.h"
 #include "cc/occlusion_tracker.h"
 #include "cc/output_surface.h"
 #include "cc/proxy.h"
 #include "cc/rate_limiter.h"
 #include "cc/rendering_stats.h"
 #include "cc/scoped_ptr_vector.h"
+#include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkColor.h"
+#include "third_party/skia/include/core/SkPicture.h"
 #include "ui/gfx/rect.h"
 
 #if defined(COMPILER_GCC)
 namespace BASE_HASH_NAMESPACE {
 template<>
 struct hash<WebKit::WebGraphicsContext3D*> {
   size_t operator()(WebKit::WebGraphicsContext3D* ptr) const {
     return hash<size_t>()(reinterpret_cast<size_t>(ptr));
   }
 };
@@ skipping 154 matching lines @@
 
     void setDeviceScaleFactor(float);
     float deviceScaleFactor() const { return m_deviceScaleFactor; }
 
     HeadsUpDisplayLayer* hudLayer() const { return m_hudLayer.get(); }
 
     Proxy* proxy() const { return m_proxy.get(); }
 
     AnimationRegistrar* animationRegistrar() const { return m_animationRegistrar.get(); }
 
+    skia::RefPtr<SkPicture> capturePicture();
+
 protected:
     LayerTreeHost(LayerTreeHostClient*, const LayerTreeSettings&);
     bool initialize(scoped_ptr<Thread> implThread);
     bool initializeForTesting(scoped_ptr<Proxy> proxyForTesting);
 
 private:
     typedef std::vector<scoped_refptr<Layer> > LayerList;
 
     bool initializeProxy(scoped_ptr<Proxy> proxy);
     void initializeRenderer();
@@ skipping 63 matching lines @@
     scoped_ptr<AnimationRegistrar> m_animationRegistrar;
 
     static bool s_needsFilterContext;
 
     DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYER_TREE_HOST_H_