Use shared D3D9 texture to transport the compositor's backing buffer to the browser...

content/browser/renderer_host/render_widget_host_view_win.h

Index: content/browser/renderer_host/render_widget_host_view_win.h
===================================================================
--- content/browser/renderer_host/render_widget_host_view_win.h	(revision 108480)
+++ content/browser/renderer_host/render_widget_host_view_win.h	(working copy)
@@ -27,6 +27,7 @@
 #include "ui/base/win/ime_input.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/point.h"
+#include "ui/gfx/surface/accelerated_surface_win.h"
 #include "webkit/glue/webcursor.h"
 
 class BackingStore;
@@ -200,6 +201,9 @@
       bool is_pinned_to_left, bool is_pinned_to_right) OVERRIDE;
   virtual gfx::PluginWindowHandle GetCompositingSurface() OVERRIDE;
   virtual void ShowCompositorHostWindow(bool show) OVERRIDE;
+  virtual void AcceleratedSurfaceBuffersSwapped(
+      const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
+      int gpu_host_id) OVERRIDE;
   virtual void OnAccessibilityNotifications(
       const std::vector<ViewHostMsg_AccessibilityNotification_Params>& params
       ) OVERRIDE;
@@ -340,6 +344,10 @@
   // When we are doing accelerated compositing
   HWND compositor_host_window_;
 
+  // Presents a texture received from another process to the compositing
+  // window.
+  scoped_refptr<AcceleratedSurface> accelerated_surface_;
+
   // true if the compositor host window must be hidden after the
   // software renderered view is updated.
   bool hide_compositor_window_at_next_paint_;