gpu: Remove GPU service side GMB creation from handle.

content/common/gpu_host_messages.h

Index: content/common/gpu_host_messages.h
diff --git a/content/common/gpu_host_messages.h b/content/common/gpu_host_messages.h
index 025e860c18981d584ba00be794a169b233cc2ff6..ebeedcf7132e98db866478925105d3b8d0c28337 100644
--- a/content/common/gpu_host_messages.h
+++ b/content/common/gpu_host_messages.h
@@ -63,14 +63,6 @@ IPC_STRUCT_BEGIN(GpuMsg_CreateGpuMemoryBuffer_Params)
   IPC_STRUCT_MEMBER(gpu::SurfaceHandle, surface_handle)
 IPC_STRUCT_END()
 
-IPC_STRUCT_BEGIN(GpuMsg_CreateGpuMemoryBufferFromHandle_Params)
-  IPC_STRUCT_MEMBER(gfx::GpuMemoryBufferHandle, handle)
-  IPC_STRUCT_MEMBER(gfx::GpuMemoryBufferId, id)
-  IPC_STRUCT_MEMBER(gfx::Size, size)
-  IPC_STRUCT_MEMBER(gfx::BufferFormat, format)
-  IPC_STRUCT_MEMBER(int32_t, client_id)
-IPC_STRUCT_END()
-
 IPC_STRUCT_TRAITS_BEGIN(content::EstablishChannelParams)
   IPC_STRUCT_TRAITS_MEMBER(client_id)
   IPC_STRUCT_TRAITS_MEMBER(client_tracing_id)
@@ -167,11 +159,6 @@ IPC_MESSAGE_CONTROL1(GpuMsg_CloseChannel, int32_t /* client_id */)
 IPC_MESSAGE_CONTROL1(GpuMsg_CreateGpuMemoryBuffer,
                      GpuMsg_CreateGpuMemoryBuffer_Params)
 
-// Tells the GPU process to create a new gpu memory buffer from an existing
-// handle.
-IPC_MESSAGE_CONTROL1(GpuMsg_CreateGpuMemoryBufferFromHandle,
-                     GpuMsg_CreateGpuMemoryBufferFromHandle_Params)
-
 // Tells the GPU process to destroy buffer.
 IPC_MESSAGE_CONTROL3(GpuMsg_DestroyGpuMemoryBuffer,
                      gfx::GpuMemoryBufferId, /* id */