Aura: Less image transport IPCs and less code.

content/common/gpu/gpu_messages.h

 // Copyright (c) 2012 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.
 
 // Multiply-included message file, hence no include guard here, but see below
 // for a much smaller-than-usual include guard section.
 
 #include <string>
 #include <vector>
 
@@ skipping 204 matching lines @@
                      GPUCreateCommandBufferConfig /* init_params */)
 
 // Tells the GPU process to create a context for collecting graphics card
 // information.
 IPC_MESSAGE_CONTROL0(GpuMsg_CollectGraphicsInfo)
 
 // Tells the GPU process that the browser process has finished resizing the
 // view.
 IPC_MESSAGE_ROUTED0(AcceleratedSurfaceMsg_ResizeViewACK)
 
-// Tells the GPU process that it's safe to start rendering to the surface.
-IPC_MESSAGE_ROUTED2(AcceleratedSurfaceMsg_NewACK,
-                    uint64 /* surface_handle */,
-                    TransportDIB::Handle /* shared memory buffer */)
-
 // Tells the GPU process that the browser process has handled the swap
 // buffers or post sub-buffer request. A non-zero sync point means
 // that we should wait for the sync point.
 IPC_MESSAGE_ROUTED1(AcceleratedSurfaceMsg_BufferPresented,
                     uint32 /* sync_point */)
 
 // Tells the GPU process to remove all contexts.
 IPC_MESSAGE_CONTROL0(GpuMsg_Clean)
 
 // Tells the GPU process to crash.
@@ skipping 345 matching lines @@
 
 // Confirm decoder has been flushed.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_FlushDone)
 
 // Confirm decoder has been reset.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_ResetDone)
 
 // Video decoder has encountered an error.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_ErrorNotification,
                     uint32) /* Error ID */