Added proxy / stub pair for GPU surfaces.

content/common/gpu/gpu_messages.h

 // 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 <vector>
 #include <string>
 
 
 #include "base/shared_memory.h"
 #include "content/common/common_param_traits.h"
@@ skipping 289 matching lines @@
                             uint32, /* parent_texture_id */
                             int32 /* route_id */)
 
 // The CommandBufferProxy sends this to the GpuCommandBufferStub in its
 // destructor, so that the stub deletes the actual CommandBufferService
 // object that it's hosting.
 // TODO(apatrick): Implement this.
 IPC_SYNC_MESSAGE_CONTROL1_0(GpuChannelMsg_DestroyCommandBuffer,
                             int32 /* instance_id */)
 
+// Create a surface for offscreen rendering.
+IPC_SYNC_MESSAGE_CONTROL1_1(GpuChannelMsg_CreateOffscreenSurface,
+                            gfx::Size, /* size */
+                            int /* route_id */)
+
+// Destroy a surface by routing id.
+IPC_MESSAGE_CONTROL1(GpuChannelMsg_DestroySurface,
+                     int /* route_id */);
+
 // Create hardware video decoder && associate it with the output |decoder_id|;
 // We need this to be control message because we had to map the GpuChannel and
 // |decoder_id|.
 IPC_MESSAGE_CONTROL2(GpuChannelMsg_CreateVideoDecoder,
                      int32, /* decoder_id */
                      std::vector<uint32>) /* configs */
 
 // Release all resource of the hardware video decoder which was assocaited
 // with the input |decoder_id|.
 // TODO(hclam): This message needs to be asynchronous.
@@ skipping 294 matching lines @@
 
 // Confirm decoder has been aborted.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_AbortDone)
 
 // Decoder has faced end of stream marker in the stream.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_EndOfStream)
 
 // Video decoder has encountered an error.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_ErrorNotification,
                     uint32) /* Error ID */