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

chrome/browser/policy/policy_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 <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 832 matching lines @@
 #endif
 };
 
 #if defined(OS_WIN)
 // This policy only exists on Windows.
 
 // Sets the locale policy before the browser is started.
 class LocalePolicyTest : public PolicyTest {
  public:
   LocalePolicyTest() {}
-  virtual ~LocalePolicyTest() {}
+  ~LocalePolicyTest() override {}
 
-  virtual void SetUpInProcessBrowserTestFixture() override {
+  void SetUpInProcessBrowserTestFixture() override {
     PolicyTest::SetUpInProcessBrowserTestFixture();
     PolicyMap policies;
     policies.Set(key::kApplicationLocaleValue,
                  POLICY_LEVEL_MANDATORY,
                  POLICY_SCOPE_USER,
                  new base::StringValue("fr"),
                  NULL);
     provider_.UpdateChromePolicy(policies);
     // The "en-US" ResourceBundle is always loaded before this step for tests,
     // but in this test we want the browser to load the bundle as it
@@ skipping 2897 matching lines @@
   PrefService* prefs = browser()->profile()->GetPrefs();
   EXPECT_TRUE(extensions::MessageService::IsNativeMessagingHostAllowed(
       prefs, "host.name"));
   EXPECT_FALSE(extensions::MessageService::IsNativeMessagingHostAllowed(
       prefs, "other.host.name"));
 }
 
 #endif  // !defined(CHROME_OS)
 
 }  // namespace policy