convert //gpu to std::unique_ptr

blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.cc

 // Copyright 2016 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 "blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/numerics/safe_conversions.h"
 #include "ui/gfx/buffer_format_util.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
 namespace blimp {
 namespace client {
 
 namespace {
@@ skipping 116 matching lines @@
 }
 
 void BlimpGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace client
 }  // namespace blimp