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

chrome/browser/chromeos/settings/session_manager_operation_unittest.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 "chrome/browser/chromeos/settings/session_manager_operation.h"
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 34 matching lines @@
       : ui_thread_(content::BrowserThread::UI, &message_loop_),
         file_thread_(content::BrowserThread::FILE, &message_loop_),
         owner_key_util_(new ownership::MockOwnerKeyUtil()),
         user_manager_(new user_manager::FakeUserManager()),
         user_manager_enabler_(user_manager_),
         validated_(false) {
     OwnerSettingsServiceChromeOSFactory::GetInstance()
         ->SetOwnerKeyUtilForTesting(owner_key_util_);
   }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     policy_.payload().mutable_user_whitelist()->add_user_whitelist(
         "fake-whitelist");
     policy_.Build();
 
     profile_.reset(new TestingProfile());
     service_ = OwnerSettingsServiceChromeOSFactory::GetForBrowserContext(
         profile_.get());
   }
 
   MOCK_METHOD2(OnOperationCompleted,
@@ skipping 152 matching lines @@
             policy_.GetBlob());
   ASSERT_TRUE(op.policy_data().get());
   EXPECT_EQ(policy_.policy_data().SerializeAsString(),
             op.policy_data()->SerializeAsString());
   ASSERT_TRUE(op.device_settings().get());
   EXPECT_EQ(policy_.payload().SerializeAsString(),
             op.device_settings()->SerializeAsString());
 }
 
 }  // namespace chromeos