convert //gpu to std::unique_ptr

content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc

 // Copyright (c) 2012 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/webgraphicscontext3d_command_buffer_impl.h"
 
 #include "third_party/khronos/GLES2/gl2.h"
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
 #include "third_party/khronos/GLES2/gl2ext.h"
 
 #include <algorithm>
 #include <map>
+#include <memory>
 
 #include "base/atomicops.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/profiler/scoped_tracker.h"
@@ skipping 296 matching lines @@
   {
     base::AutoLock lock(g_default_share_groups_lock.Get());
     g_default_share_groups.Get().erase(host_.get());
   }
 
   gpu::CommandBuffer::State state = command_buffer_->GetLastState();
   UmaRecordContextLost(context_type_, state.error, state.context_lost_reason);
 }
 
 }  // namespace content