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

content/common/gpu/image_transport_surface_mac.cc

Index: content/common/gpu/image_transport_surface_mac.cc
===================================================================
--- content/common/gpu/image_transport_surface_mac.cc	(revision 108480)
+++ content/common/gpu/image_transport_surface_mac.cc	(working copy)
@@ -43,6 +43,7 @@
   virtual void OnNewSurfaceACK(uint64 surface_id,
                                TransportDIB::Handle shm_handle) OVERRIDE;
   virtual void OnBuffersSwappedACK() OVERRIDE;
+  virtual void OnResizeViewACK() OVERRIDE;
   virtual void OnResize(gfx::Size size) OVERRIDE;
 
  private:
@@ -94,6 +95,7 @@
   virtual void OnBuffersSwappedACK() OVERRIDE;
   virtual void OnNewSurfaceACK(uint64 surface_id,
                                TransportDIB::Handle shm_handle) OVERRIDE;
+  virtual void OnResizeViewACK() OVERRIDE;
   virtual void OnResize(gfx::Size size) OVERRIDE;
 
  private:
@@ -239,6 +241,10 @@
   helper_->SetScheduled(true);
 }
 
+void IOSurfaceImageTransportSurface::OnResizeViewACK() {
+  NOTREACHED();
+}
+
 void IOSurfaceImageTransportSurface::OnResize(gfx::Size size) {
   IOSurfaceSupport* io_surface_support = IOSurfaceSupport::Initialize();
 
@@ -443,6 +449,10 @@
   DCHECK_NE(shared_mem_.get(), static_cast<void*>(NULL));
 }
 
+void TransportDIBImageTransportSurface::OnResizeViewACK() {
+  NOTREACHED();
+}
+
 void TransportDIBImageTransportSurface::OnResize(gfx::Size size) {
   size_ = size;