3D Compositing in <browser>, first draft.

content/browser/renderer_host/render_widget_host_view_gtk.h

Index: content/browser/renderer_host/render_widget_host_view_gtk.h
diff --git a/content/browser/renderer_host/render_widget_host_view_gtk.h b/content/browser/renderer_host/render_widget_host_view_gtk.h
index d3e4e877c02f490ba7f8ed6cdc076ccf82d7714b..e7424df7c1e695452bcb8cc35366e7d612d64da4 100644
--- a/content/browser/renderer_host/render_widget_host_view_gtk.h
+++ b/content/browser/renderer_host/render_widget_host_view_gtk.h
@@ -104,12 +104,6 @@ class CONTENT_EXPORT RenderWidgetHostViewGtk
       skia::PlatformCanvas* output,
       base::Callback<void(bool)> callback) OVERRIDE;
   virtual void OnAcceleratedCompositingStateChange() OVERRIDE;
-  virtual void AcceleratedSurfaceBuffersSwapped(
-      const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
-      int gpu_host_id) OVERRIDE;
-  virtual void AcceleratedSurfacePostSubBuffer(
-      const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
-      int gpu_host_id) OVERRIDE;
   virtual void AcceleratedSurfaceSuspend() OVERRIDE;
   virtual bool HasAcceleratedSurface(const gfx::Size& desired_size) OVERRIDE;
   virtual void CreatePluginContainer(gfx::PluginWindowHandle id) OVERRIDE;
@@ -122,7 +116,6 @@ class CONTENT_EXPORT RenderWidgetHostViewGtk
       bool is_pinned_to_left, bool is_pinned_to_right) OVERRIDE;
   virtual void GetScreenInfo(WebKit::WebScreenInfo* results) OVERRIDE;
   virtual gfx::Rect GetRootWindowBounds() OVERRIDE;
-  virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE;
   virtual bool LockMouse() OVERRIDE;
   virtual void UnlockMouse() OVERRIDE;
   virtual void OnAccessibilityNotifications(
@@ -316,6 +309,26 @@ class CONTENT_EXPORT RenderWidgetHostViewGtk
   scoped_ptr<BrowserAccessibilityManager> browser_accessibility_manager_;
 
   ui::GtkSignalRegistrar signals_;
+
+  class CompositingDelegateGtk : public CompositingDelegate {
+   public:
+    virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE; 
+    virtual bool ResizeNeedsNewSurface() OVERRIDE;
+
+    virtual void AcceleratedSurfaceBuffersSwapped(
+        const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
+        int gpu_host_id) OVERRIDE;
+    virtual void AcceleratedSurfacePostSubBuffer(
+        const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
+        int gpu_host_id) OVERRIDE;
+
+   private:
+    friend class RenderWidgetHostViewGtk;
+    CompositingDelegateGtk(RenderWidgetHostViewGtk* view)
+      : view_(view)
+    {}
+    RenderWidgetHostViewGtk* view_;
+  };
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_