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

content/browser/renderer_host/render_widget_host_view_gtk.cc

Index: content/browser/renderer_host/render_widget_host_view_gtk.cc
===================================================================
--- content/browser/renderer_host/render_widget_host_view_gtk.cc	(revision 108480)
+++ content/browser/renderer_host/render_widget_host_view_gtk.cc	(working copy)
@@ -1005,6 +1005,11 @@
                              gtk_widget_get_visual(view_.get())->depth);
 }
 
+void RenderWidgetHostViewGtk::AcceleratedSurfaceBuffersSwapped(
+    const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
+    int gpu_host_id) {

[jonathan.backer, 2011/11/03 23:09:07]

NOTREACHED()

+}
+
 void RenderWidgetHostViewGtk::SetBackground(const SkBitmap& background) {
   RenderWidgetHostView::SetBackground(background);
   host_->Send(new ViewMsg_SetBackground(host_->routing_id(), background));