Remove the assumption about client_id from gpu memory buffer allocation on the browser side.

content/common/gpu/client/gpu_memory_buffer_impl_mac.cc

 // Copyright 2013 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/gpu/client/gpu_memory_buffer_impl.h"
 
 #include "content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h"
 #include "content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.h"
 
 namespace content {
 
 // static
 void GpuMemoryBufferImpl::Create(const gfx::Size& size,
                                  unsigned internalformat,
                                  unsigned usage,
+                                 int gpu_client_id,
                                  const CreationCallback& callback) {
   if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
           size, internalformat, usage)) {
     GpuMemoryBufferImplSharedMemory::Create(
         size, internalformat, usage, callback);
     return;
   }
 
   callback.Run(scoped_ptr<GpuMemoryBufferImpl>());
 }
@@ skipping 44 matching lines @@
         return scoped_ptr<GpuMemoryBufferImpl>();
 
       return buffer.PassAs<GpuMemoryBufferImpl>();
     }
     default:
       return scoped_ptr<GpuMemoryBufferImpl>();
   }
 }
 
 }  // namespace content