Added proxy / stub pair for GPU surfaces.

content/renderer/gpu_channel_host.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/gpu_channel_host.h"
 
 #include "content/common/child_process.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/renderer/command_buffer_proxy.h"
+#include "content/renderer/gpu_surface_proxy.h"
 #include "content/renderer/gpu_video_service_host.h"
 #include "content/renderer/render_thread.h"
 #include "content/renderer/transport_texture_service.h"
 #include "googleurl/src/gurl.h"
 
 GpuChannelHost::GpuChannelHost()
     : state_(kUnconnected),
       gpu_video_service_host_(new GpuVideoServiceHost()),
       transport_texture_service_(new TransportTextureService()) {
 }
@@ skipping 159 matching lines @@
   // Check the proxy has not already been removed after a channel error.
   int route_id = command_buffer->route_id();
   if (proxies_.find(command_buffer->route_id()) != proxies_.end()) {
     proxies_.erase(route_id);
     router_.RemoveRoute(route_id);
   }
 
   delete command_buffer;
 #endif
 }
+
+GpuSurfaceProxy* GpuChannelHost::CreateOffscreenSurface(const gfx::Size& size) {
+#if defined(ENABLE_GPU)
+  int route_id;
+  if (!Send(new GpuChannelMsg_CreateOffscreenSurface(size, &route_id)))
+    return NULL;
+
+  scoped_ptr<GpuSurfaceProxy> surface(new GpuSurfaceProxy(this, route_id));
+  router_.AddRoute(route_id, surface.get());
+
+  return surface.release();
+#endif
+}
+
+void GpuChannelHost::DestroySurface(GpuSurfaceProxy* surface) {
+#if defined(ENABLE_GPU)
+  Send(new GpuChannelMsg_DestroySurface(surface->route_id()));
+  if (router_.ResolveRoute(surface->route_id()))
+    router_.RemoveRoute(surface->route_id());
+
+  delete surface;
+#endif
+}