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

chrome/browser/renderer_host/render_widget_host_view_views.cc

Index: chrome/browser/renderer_host/render_widget_host_view_views.cc
===================================================================
--- chrome/browser/renderer_host/render_widget_host_view_views.cc	(revision 108480)
+++ chrome/browser/renderer_host/render_widget_host_view_views.cc	(working copy)
@@ -1144,19 +1144,20 @@
 }
 
 void RenderWidgetHostViewViews::AcceleratedSurfaceBuffersSwapped(
-    uint64 surface_id,
-    int32 route_id,
+    const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
     int gpu_host_id) {
-  SetExternalTexture(accelerated_surface_containers_[surface_id]->GetTexture());
+  SetExternalTexture(
+      accelerated_surface_containers_[params.surface_id]->GetTexture());
   glFlush();
 
   if (!GetWidget() || !GetWidget()->GetCompositor()) {
     // We have no compositor, so we have no way to display the surface
-    AcknowledgeSwapBuffers(route_id, gpu_host_id);  // Must still send the ACK
+    // Must still send the ACK
+    AcknowledgeSwapBuffers(params.route_id, gpu_host_id);
   } else {
     // Add sending an ACK to the list of things to do OnCompositingEnded
     on_compositing_ended_callbacks_.push_back(
-        base::Bind(AcknowledgeSwapBuffers, route_id, gpu_host_id));
+        base::Bind(AcknowledgeSwapBuffers, params.route_id, gpu_host_id));
     ui::Compositor *compositor = GetWidget()->GetCompositor();
     if (!compositor->HasObserver(this))
       compositor->AddObserver(this);
@@ -1173,4 +1174,11 @@
   compositor->RemoveObserver(this);
 }
 
+#else
+
+void RenderWidgetHostViewViews::AcceleratedSurfaceBuffersSwapped(
+    const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
+    int gpu_host_id) {

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

NOTREACHED()

+}
+
 #endif