cc: Pass LayerTreeHostImpl to LayerImpl constructor

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 <public/WebFilterOperations.h>
 #include <string>
 #include <vector>
@@ skipping 17 matching lines @@
 class WebLayerScrollClient;
 }
 
 namespace cc {
 
 class ActiveAnimation;
 struct AnimationEvent;
 class LayerAnimationDelegate;
 class LayerImpl;
 class LayerTreeHost;
+class LayerTreeHostImpl;
 class PriorityCalculator;
 class ResourceUpdateQueue;
 class ScrollbarLayer;
 struct AnimationEvent;
 struct RenderingStats;
 
 // Base class for composited layers. Special layer types are derived from
 // this class.
 class CC_EXPORT Layer : public base::RefCounted<Layer> {
 public:
@@ skipping 246 matching lines @@
 
     // The update rect is the region of the compositor resource that was actually updated by the compositor.
     // For layers that may do updating outside the compositor's control (i.e. plugin layers), this information
     // is not available and the update rect will remain empty.
     // Note this rect is in layer space (not content space).
     gfx::RectF m_updateRect;
 
     scoped_refptr<Layer> m_maskLayer;
 
     // Constructs a LayerImpl of the correct runtime type for this Layer type.
-    virtual scoped_ptr<LayerImpl> createLayerImpl();
+    virtual scoped_ptr<LayerImpl> createLayerImpl(LayerTreeHostImpl* hostImpl);
     int m_layerId;
 
 private:
     friend class base::RefCounted<Layer>;
 
     void setParent(Layer*);
     bool hasAncestor(Layer*) const;
     bool descendantIsFixedToContainerLayer() const;
 
     size_t numChildren() const { return m_children.size(); }
@@ skipping 62 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_