Add GpuMemoryBuffer CreateFromClientId interface

cc/test/test_gpu_memory_buffer_manager.cc

 // Copyright 2014 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 "cc/test/test_gpu_memory_buffer_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 125 matching lines @@
       base::WrapUnique(new base::SharedMemory(handle.handle, false)),
       handle.offset, handle.stride));
 }
 
 gfx::GpuMemoryBuffer*
 TestGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
     ClientBuffer buffer) {
   return reinterpret_cast<gfx::GpuMemoryBuffer*>(buffer);
 }
 
+std::unique_ptr<gfx::GpuMemoryBuffer>
+TestGpuMemoryBufferManager::CreateGpuMemoryBufferFromChildId(
+    int child_client_id,
+    const gfx::GpuMemoryBufferId& gpu_memory_buffer_id) {
+  NOTIMPLEMENTED();
+  return nullptr;
+}
+
 void TestGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {}
 
 }  // namespace cc