iwyu: Use callback_old.h where appropriate, part 1.

content/browser/gpu/gpu_data_manager.h

 // Copyright (c) 2011 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.
 
 #ifndef CONTENT_BROWSER_GPU_GPU_DATA_MANAGER_H_
 #define CONTENT_BROWSER_GPU_GPU_DATA_MANAGER_H_
 #pragma once
 
 #include <set>
 #include <string>
 
-#include "base/callback.h"
+#include "base/callback_old.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/synchronization/lock.h"
 #include "base/values.h"
 #include "content/common/gpu/gpu_feature_flags.h"
 #include "content/common/gpu/gpu_info.h"
 
 class CommandLine;
 class GpuBlacklist;
 
@@ skipping 76 matching lines @@
 
   // Map of callbacks.
   std::set<Callback0::Type*> gpu_info_update_callbacks_;
 
   ListValue log_messages_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuDataManager);
 };
 
 #endif  // CONTENT_BROWSER_GPU_GPU_DATA_MANAGER_H_