Switch to standard integer types in chrome/browser/, part 2 of 4.

chrome/browser/gpu/gpu_mode_manager.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_GPU_GPU_MODE_MANAGER_H_
 #define CHROME_BROWSER_GPU_GPU_MODE_MANAGER_H_
 
+#include "base/macros.h"
 #include "base/prefs/pref_change_registrar.h"
 
 class PrefRegistrySimple;
 
 class GpuModeManager {
  public:
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
   GpuModeManager();
   ~GpuModeManager();
 
   bool initial_gpu_mode_pref() const;
 
  private:
   static bool IsGpuModePrefEnabled();
 
   PrefChangeRegistrar pref_registrar_;
 
   bool initial_gpu_mode_pref_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuModeManager);
 };
 
 #endif  // CHROME_BROWSER_GPU_GPU_MODE_MANAGER_H_