cc: Create a cc::ScrollbarThemePainter and an adapter class in compositor bindings.

cc/scrollbar_layer.h

 // Copyright 2012 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_SCROLLBAR_LAYER_H_
 #define CC_SCROLLBAR_LAYER_H_
 
 #include "cc/caching_bitmap_content_layer_updater.h"
 #include "cc/cc_export.h"
 #include "cc/contents_scaling_layer.h"
-#include <public/WebScrollbar.h>
-#include <public/WebScrollbarThemeGeometry.h>
-#include <public/WebScrollbarThemePainter.h>
+#include "cc/scrollbar_theme_painter.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebScrollbar.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebScrollbarThemeGeometry.h"
 
 namespace cc {
 
 class ResourceUpdateQueue;
 class Scrollbar;
 class ScrollbarThemeComposite;
 
 class CC_EXPORT ScrollbarLayer : public ContentsScalingLayer {
 public:
     virtual scoped_ptr<LayerImpl> createLayerImpl(LayerTreeImpl* treeImpl) OVERRIDE;
 
-    static scoped_refptr<ScrollbarLayer> create(scoped_ptr<WebKit::WebScrollbar>, WebKit::WebScrollbarThemePainter, scoped_ptr<WebKit::WebScrollbarThemeGeometry>, int scrollLayerId);
+    static scoped_refptr<ScrollbarLayer> create(
+        scoped_ptr<WebKit::WebScrollbar>,
+        scoped_ptr<ScrollbarThemePainter>,
+        scoped_ptr<WebKit::WebScrollbarThemeGeometry>,
+        int scrollLayerId);
 
     int scrollLayerId() const { return m_scrollLayerId; }
     void setScrollLayerId(int id);
 
     // Layer interface
     virtual void setTexturePriorities(const PriorityCalculator&) OVERRIDE;
     virtual void update(ResourceUpdateQueue&, const OcclusionTracker*, RenderingStats&) OVERRIDE;
     virtual void setLayerTreeHost(LayerTreeHost*) OVERRIDE;
     virtual void pushPropertiesTo(LayerImpl*) OVERRIDE;
     virtual void calculateContentsScale(
         float idealContentsScale,
         float* contentsScaleX,
         float* contentsScaleY,
         gfx::Size* contentBounds) OVERRIDE;
 
     virtual ScrollbarLayer* toScrollbarLayer() OVERRIDE;
 
 protected:
-    ScrollbarLayer(scoped_ptr<WebKit::WebScrollbar>, WebKit::WebScrollbarThemePainter, scoped_ptr<WebKit::WebScrollbarThemeGeometry>, int scrollLayerId);
+    ScrollbarLayer(
+        scoped_ptr<WebKit::WebScrollbar>,
+        scoped_ptr<ScrollbarThemePainter>,
+        scoped_ptr<WebKit::WebScrollbarThemeGeometry>,
+        int scrollLayerId);
     virtual ~ScrollbarLayer();
 
 private:
     void updatePart(CachingBitmapContentLayerUpdater*, LayerUpdater::Resource*, const gfx::Rect&, ResourceUpdateQueue&, RenderingStats&);
     void createUpdaterIfNeeded();
     gfx::Rect scrollbarLayerRectToContentRect(const gfx::Rect& layerRect) const;
 
     int maxTextureSize();
     float clampScaleToMaxTextureSize(float scale);
 
     scoped_ptr<WebKit::WebScrollbar> m_scrollbar;
-    WebKit::WebScrollbarThemePainter m_painter;
+    scoped_ptr<ScrollbarThemePainter> m_painter;
     scoped_ptr<WebKit::WebScrollbarThemeGeometry> m_geometry;
     int m_scrollLayerId;
 
     GLenum m_textureFormat;
 
     scoped_refptr<CachingBitmapContentLayerUpdater> m_backTrackUpdater;
     scoped_refptr<CachingBitmapContentLayerUpdater> m_foreTrackUpdater;
     scoped_refptr<CachingBitmapContentLayerUpdater> m_thumbUpdater;
 
     // All the parts of the scrollbar except the thumb
     scoped_ptr<LayerUpdater::Resource> m_backTrack;
     scoped_ptr<LayerUpdater::Resource> m_foreTrack;
     scoped_ptr<LayerUpdater::Resource> m_thumb;
 };
 
 }
 #endif  // CC_SCROLLBAR_LAYER_H_