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

cc/layer.h

 // Copyright 2010 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_H_
 #define CC_LAYER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 182 matching lines @@
 
     void setUseParentBackfaceVisibility(bool useParentBackfaceVisibility) { m_useParentBackfaceVisibility = useParentBackfaceVisibility; }
     bool useParentBackfaceVisibility() const { return m_useParentBackfaceVisibility; }
 
     virtual void setLayerTreeHost(LayerTreeHost*);
 
     bool hasDelegatedContent() const { return false; }
     bool hasContributingDelegatedRenderPasses() const { return false; }
 
     void setIsDrawable(bool);
+    bool isDrawable() const { return m_isDrawable; }
 
     void setReplicaLayer(Layer*);
     Layer* replicaLayer() { return m_replicaLayer.get(); }
     const Layer* replicaLayer() const { return m_replicaLayer.get(); }
 
     bool hasMask() const { return !!m_maskLayer; }
     bool hasReplica() const { return !!m_replicaLayer; }
     bool replicaHasMask() const { return m_replicaLayer && (m_maskLayer || m_replicaLayer->m_maskLayer); }
 
     // These methods typically need to be overwritten by derived classes.
@@ skipping 64 matching lines @@
 
     void addLayerAnimationEventObserver(LayerAnimationEventObserver* animationObserver);
     void removeLayerAnimationEventObserver(LayerAnimationEventObserver* animationObserver);
 
     virtual Region visibleContentOpaqueRegion() const;
 
     virtual ScrollbarLayer* toScrollbarLayer();
 
     gfx::Rect layerRectToContentRect(const gfx::RectF& layerRect) const;
 
+    virtual bool isPictureLayer() const;
+
     // In impl-side painting, this returns true if this layer type is not
     // compatible with the main thread running freely, such as a double-buffered
     // canvas that doesn't want to be triple-buffered across all three trees.
     virtual bool blocksPendingCommit() const;
 
 protected:
     friend class LayerImpl;
     friend class TreeSynchronizer;
     virtual ~Layer();
 
@@ skipping 104 matching lines @@
     WebKit::WebLayerScrollClient* m_layerScrollClient;
 
     DrawProperties<Layer, RenderSurface> m_drawProperties;
 };
 
 void sortLayers(std::vector<scoped_refptr<Layer> >::iterator, std::vector<scoped_refptr<Layer> >::iterator, void*);
 
 }  // namespace cc
 
 #endif  // CC_LAYER_H_