Add GenericSharedMemoryId and use w/ GpuMemoryBuffer

content/common/child_process_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.
 
 // Common IPC messages used for child processes.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 #include <vector>
 
@@ skipping 167 matching lines @@
 IPC_MESSAGE_CONTROL1(ChildProcessHostMsg_DeletedSharedBitmap,
                      cc::SharedBitmapId)
 
 #if defined(USE_TCMALLOC)
 // Reply to ChildProcessMsg_GetTcmallocStats.
 IPC_MESSAGE_CONTROL1(ChildProcessHostMsg_TcmallocStats,
                      std::string /* output */)
 #endif
 
 // Asks the browser to create a gpu memory buffer.
-IPC_SYNC_MESSAGE_CONTROL4_1(ChildProcessHostMsg_SyncAllocateGpuMemoryBuffer,
+IPC_SYNC_MESSAGE_CONTROL5_1(ChildProcessHostMsg_SyncAllocateGpuMemoryBuffer,
+                            gfx::GpuMemoryBufferId /* new_id */,
                             uint32 /* width */,
                             uint32 /* height */,
                             gfx::BufferFormat,
                             gfx::BufferUsage,
                             gfx::GpuMemoryBufferHandle)
 
 // Informs the browser that the child deleted a gpu memory buffer.
 IPC_MESSAGE_CONTROL2(ChildProcessHostMsg_DeletedGpuMemoryBuffer,
                      gfx::GpuMemoryBufferId,
                      uint32 /* sync_point */)
 
 // Asks the browser to create a block of discardable shared memory for the
 // child process.
 IPC_SYNC_MESSAGE_CONTROL2_1(
     ChildProcessHostMsg_SyncAllocateLockedDiscardableSharedMemory,
     uint32 /* size */,
     content::DiscardableSharedMemoryId,
     base::SharedMemoryHandle)
 
 // Informs the browser that the child deleted a block of discardable shared
 // memory.
 IPC_MESSAGE_CONTROL1(ChildProcessHostMsg_DeletedDiscardableSharedMemory,
                      content::DiscardableSharedMemoryId)