Update {virtual,override} to follow C++11 style in chrome.

chrome/browser/first_run/first_run_browsertest.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 <string>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 111 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(FirstRunMasterPrefsBrowserTestBase);
 };
 
 template<const char Text[]>
 class FirstRunMasterPrefsBrowserTestT
     : public FirstRunMasterPrefsBrowserTestBase {
  public:
   FirstRunMasterPrefsBrowserTestT() {}
 
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     SetMasterPreferencesForTest(Text);
     FirstRunMasterPrefsBrowserTestBase::SetUp();
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FirstRunMasterPrefsBrowserTestT);
 };
 
 // Returns the true expected import state, derived from the original
 // |expected_import_state|, for the current test machine's configuration. Some
@@ skipping 160 matching lines @@
     FirstRunMasterPrefsWithTrackedPreferences,
     testing::Values(
         chrome_prefs::internals::kSettingsEnforcementGroupNoEnforcement,
         chrome_prefs::internals::kSettingsEnforcementGroupEnforceAlways,
         chrome_prefs::internals::
             kSettingsEnforcementGroupEnforceAlwaysWithDSE,
         chrome_prefs::internals::
             kSettingsEnforcementGroupEnforceAlwaysWithExtensionsAndDSE));
 
 #endif  // !defined(OS_CHROMEOS)