[cc] Store CCLayerImpls as scoped_ptrs

cc/LayerChromium.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 LayerChromium_h
 #define LayerChromium_h
 
 #if USE(ACCELERATED_COMPOSITING)
 
 #include "base/memory/ref_counted.h"
 #include "CCLayerAnimationController.h"
 #include "CCOcclusionTracker.h"
-#include "CCPrioritizedTexture.h"
 #include "FloatPoint.h"
 #include "Region.h"
 #include "RenderSurfaceChromium.h"
 #include "SkColor.h"
 #include <public/WebFilterOperations.h>
 #include <public/WebTransformationMatrix.h>
 #include <string>
 #include <vector>
-#include <wtf/OwnPtr.h>
-#include <wtf/PassOwnPtr.h>
 
 namespace WebKit {
 class WebAnimationDelegate;
 class WebLayerScrollClient;
 }
 
 namespace cc {
 
 class CCActiveAnimation;
 struct CCAnimationEvent;
 class CCLayerAnimationDelegate;
 class CCLayerImpl;
 class CCLayerTreeHost;
+class CCPriorityCalculator;
 class CCTextureUpdateQueue;
 class ScrollbarLayerChromium;
 struct CCAnimationEvent;
 struct CCRenderingStats;
 
 // Base class for composited layers. Special layer types are derived from
 // this class.
 class LayerChromium : public base::RefCounted<LayerChromium>, public CCLayerAnimationControllerClient {
 public:
     typedef std::vector<scoped_refptr<LayerChromium> > LayerList;
@@ skipping 236 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).
     FloatRect m_updateRect;
 
     scoped_refptr<LayerChromium> m_maskLayer;
 
     // Constructs a CCLayerImpl of the correct runtime type for this LayerChromium type.
-    virtual PassOwnPtr<CCLayerImpl> createCCLayerImpl();
+    virtual scoped_ptr<CCLayerImpl> createCCLayerImpl();
     int m_layerId;
 
 private:
     friend class base::RefCounted<LayerChromium>;
 
     void setParent(LayerChromium*);
     bool hasAncestor(LayerChromium*) const;
     bool descendantIsFixedToContainerLayer() const;
 
     size_t numChildren() const { return m_children.size(); }
@@ skipping 75 matching lines @@
     WebKit::WebAnimationDelegate* m_layerAnimationDelegate;
     WebKit::WebLayerScrollClient* m_layerScrollClient;
 };
 
 void sortLayers(std::vector<scoped_refptr<LayerChromium> >::iterator, std::vector<scoped_refptr<LayerChromium> >::iterator, void*);
 
 }
 #endif // USE(ACCELERATED_COMPOSITING)
 
 #endif