Plumb GpuMemoryBuffer allocation to GPU process.

content/common/gpu/gpu_channel_manager.cc

Index: content/common/gpu/gpu_channel_manager.cc
diff --git a/content/common/gpu/gpu_channel_manager.cc b/content/common/gpu/gpu_channel_manager.cc
index 45298d53911744caed2d8d7acd35de714b887990..11b1aafbd841ae77441f6ee3fae5c312848256fd 100644
--- a/content/common/gpu/gpu_channel_manager.cc
+++ b/content/common/gpu/gpu_channel_manager.cc
@@ -109,6 +109,8 @@ bool GpuChannelManager::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(GpuMsg_CreateViewCommandBuffer,
                         OnCreateViewCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuMsg_CreateImage, OnCreateImage)
+    IPC_MESSAGE_HANDLER(GpuMsg_AllocateGpuMemoryBuffer,
+                        OnAllocateGpuMemoryBuffer)
     IPC_MESSAGE_HANDLER(GpuMsg_DeleteImage, OnDeleteImage)
     IPC_MESSAGE_HANDLER(GpuMsg_LoadedShader, OnLoadedShader)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -258,6 +260,14 @@ void GpuChannelManager::OnDeleteImageSyncPointRetired(
   }
 }
 
+void GpuChannelManager::OnAllocateGpuMemoryBuffer(
+    const gfx::GpuMemoryBufferParams& params) {
+  NOTIMPLEMENTED();
+
+  gfx::GpuMemoryBufferHandle handle;
+  Send(new GpuHostMsg_GpuMemoryBufferAllocated(handle));
+}
+
 void GpuChannelManager::OnLoadedShader(std::string program_proto) {
   if (program_cache())
     program_cache()->LoadProgram(program_proto);