Add multi-process GpuMemoryBuffer framework.

content/common/child_process_host_impl.cc

 // 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.
 
 #include "content/common/child_process_host_impl.h"
 
 #include <limits>
 
 #include "base/atomicops.h"
 #include "base/command_line.h"
@@ skipping 229 matching lines @@
     }
   }
 
   if (!handled) {
     handled = true;
     IPC_BEGIN_MESSAGE_MAP(ChildProcessHostImpl, msg)
       IPC_MESSAGE_HANDLER(ChildProcessHostMsg_ShutdownRequest,
                           OnShutdownRequest)
       IPC_MESSAGE_HANDLER(ChildProcessHostMsg_SyncAllocateSharedMemory,
                           OnAllocateSharedMemory)
+      IPC_MESSAGE_HANDLER(ChildProcessHostMsg_SyncAllocateGpuMemoryBuffer,
+                          OnAllocateGpuMemoryBuffer)
       IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
 
     if (!handled)
       handled = delegate_->OnMessageReceived(msg);
   }
 
 #ifdef IPC_MESSAGE_LOG_ENABLED
   if (logger->Enabled())
     logger->OnPostDispatchMessage(msg, channel_id_);
@@ skipping 26 matching lines @@
     uint32 buffer_size,
     base::SharedMemoryHandle* handle) {
   AllocateSharedMemory(buffer_size, peer_handle_, handle);
 }
 
 void ChildProcessHostImpl::OnShutdownRequest() {
   if (delegate_->CanShutdown())
     Send(new ChildProcessMsg_Shutdown());
 }
 
+void ChildProcessHostImpl::OnAllocateGpuMemoryBuffer(
+    uint32 buffer_size,
+    gfx::GpuMemoryBufferHandle* handle) {
+  handle->type = gfx::SHARED_MEMORY_BUFFER;
+  AllocateSharedMemory(buffer_size, peer_handle_, &handle->handle);
+}
+
 }  // namespace content