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

chrome/browser/policy/cloud/user_policy_signin_service_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 "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/prefs/pref_service.h"
 #include "base/run_loop.h"
 #include "base/time/time.h"
@@ skipping 133 matching lines @@
     service->RegisterForPolicy(
         kTestUser,
 #if !defined(OS_ANDROID)
         "mock_oauth_token",
 #endif
         base::Bind(&UserPolicySigninServiceTest::OnRegisterCompleted,
                    base::Unretained(this)));
     ASSERT_TRUE(IsRequestActive());
   }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     UserPolicySigninServiceFactory::SetDeviceManagementServiceForTesting(
         &device_management_service_);
 
     local_state_.reset(new TestingPrefServiceSimple);
     chrome::RegisterLocalState(local_state_->registry());
     system_request_context_getter_ = new net::TestURLRequestContextGetter(
         base::MessageLoopProxy::current());
     TestingBrowserProcess::GetGlobal()->SetSystemRequestContext(
         system_request_context_getter_.get());
     TestingBrowserProcess::GetGlobal()->SetLocalState(local_state_.get());
@@ skipping 36 matching lines @@
         profile_.get()));
     manager_->Init(&schema_registry_);
     mock_store_ = static_cast<MockUserCloudPolicyStore*>(
         manager_->core()->store());
     DCHECK(mock_store_);
     AddProfile();
 
     Mock::VerifyAndClearExpectations(mock_store_);
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     UserPolicySigninServiceFactory::SetDeviceManagementServiceForTesting(NULL);
     UserCloudPolicyManagerFactory::GetInstance()->ClearTestingFactory();
     // Free the profile before we clear out the browser prefs.
     profile_.reset();
     TestingBrowserProcess* testing_browser_process =
         TestingBrowserProcess::GetGlobal();
     testing_browser_process->SetLocalState(NULL);
     local_state_.reset();
     testing_browser_process->SetBrowserPolicyConnector(NULL);
     base::RunLoop run_loop;
@@ skipping 609 matching lines @@
   base::RunLoop().RunUntilIdle();
   EXPECT_FALSE(manager_->IsClientRegistered());
 #if !defined(OS_ANDROID)
   EXPECT_FALSE(signin_manager_->IsSignoutProhibited());
 #endif
 }
 
 }  // namespace
 
 }  // namespace policy