Enable accelerated compositing of web pages when using webkit compositor

ui/gfx/compositor/compositor_cc.h

 // Copyright (c) 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 UI_GFX_COMPOSITOR_COMPOSITOR_CC_H_
 #define UI_GFX_COMPOSITOR_COMPOSITOR_CC_H_
 #pragma once
 
 #include "base/compiler_specific.h"
+#include "base/memory/singleton.h"
+#include "base/memory/ref_counted.h"
 #include "ui/gfx/compositor/compositor.h"
 #include "ui/gfx/size.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebLayer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebLayerClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebLayerTreeView.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebLayerTreeViewClient.h"
 
 namespace gfx {
 class Rect;
+class GLContext;
+class GLSurface;
+class GLShareGroup;
 }
 
 namespace ui {
 
+class COMPOSITOR_EXPORT SharedResourcesCC : public SharedResources {
+ public:
+  static SharedResourcesCC* GetInstance();
+
+  virtual bool MakeSharedContextCurrent();
+  gfx::GLShareGroup* GetShareGroup();
+
+ private:
+  friend struct DefaultSingletonTraits<SharedResourcesCC>;
+
+  SharedResourcesCC();
+  virtual ~SharedResourcesCC();
+
+  bool Initialize();
+  void Destroy();
+
+  bool initialized_;
+
+  scoped_refptr<gfx::GLContext> context_;
+  scoped_refptr<gfx::GLSurface> surface_;
+
+  DISALLOW_COPY_AND_ASSIGN(SharedResourcesCC);
+};
+
 class COMPOSITOR_EXPORT TextureCC : public Texture {
  public:
   TextureCC();
 
   // Texture implementation.
   virtual void SetCanvas(const SkCanvas& canvas,
                          const gfx::Point& origin,
                          const gfx::Size& overall_size) OVERRIDE;
 
   virtual void Draw(const ui::TextureDrawParams& params,
                     const gfx::Rect& clip_bounds_in_texture) OVERRIDE;
 
- private:
+  virtual void Update() = 0;
+  unsigned int texture_id() const { return texture_id_; }
+  bool flipped() const { return flipped_; }
+
+ protected:
+  unsigned int texture_id_;
+  bool flipped_;
   DISALLOW_COPY_AND_ASSIGN(TextureCC);
 };
 
 class COMPOSITOR_EXPORT CompositorCC : public Compositor,
                                        public WebKit::WebLayerTreeViewClient,
                                        public WebKit::WebLayerClient {
  public:
   CompositorCC(CompositorDelegate* delegate,
                gfx::AcceleratedWidget widget,
                const gfx::Size& size);
@@ skipping 27 matching lines @@
   gfx::AcceleratedWidget widget_;
   WebKit::WebLayer root_web_layer_;
   WebKit::WebLayerTreeView host_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorCC);
 };
 
 }  // namespace ui
 
 #endif  // UI_GFX_COMPOSITOR_COMPOSITOR_CC_H_