Avoid including gtest file directly, and go through base instead

chrome/browser/chromeos/login/wizard_controller.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 CHROME_BROWSER_CHROMEOS_LOGIN_WIZARD_CONTROLLER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_WIZARD_CONTROLLER_H_
 #pragma once
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer.h"
 #include "chrome/browser/chromeos/login/screen_observer.h"
 #include "chrome/browser/chromeos/login/wizard_screen.h"
 #include "googleurl/src/gurl.h"
-#include "testing/gtest/include/gtest/gtest_prod.h"
 #include "ui/gfx/rect.h"
 
 class PrefService;
 
 namespace chromeos {
 
 class EnterpriseEnrollmentScreen;
 class EulaScreen;
 class HTMLPageScreen;
 class LoginDisplayHost;
@@ skipping 189 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(WizardControllerFlowTest, Accelerators);
   friend class WizardControllerFlowTest;
   friend class WizardInProcessBrowserTest;
 
   DISALLOW_COPY_AND_ASSIGN(WizardController);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_WIZARD_CONTROLLER_H_