Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/login.

chrome/browser/chromeos/login/login_screen_policy_browsertest.cc

Index: chrome/browser/chromeos/login/login_screen_policy_browsertest.cc
diff --git a/chrome/browser/chromeos/login/login_screen_policy_browsertest.cc b/chrome/browser/chromeos/login/login_screen_policy_browsertest.cc
index 61bb9407a55d4f9fbfe5ecb5f1d836749aaa692d..2afb4b3cde396b3af26406f87fd259f91e31f228 100644
--- a/chrome/browser/chromeos/login/login_screen_policy_browsertest.cc
+++ b/chrome/browser/chromeos/login/login_screen_policy_browsertest.cc
@@ -19,11 +19,11 @@ namespace em = enterprise_management;
 namespace chromeos {
 
 class LoginScreenPolicyTest : public policy::DevicePolicyCrosBrowserTest {
-  virtual void SetUpCommandLine(base::CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(switches::kLoginManager);
   }
 
-  virtual void SetUpInProcessBrowserTestFixture() override {
+  void SetUpInProcessBrowserTestFixture() override {
     InstallOwnerKey();
     MarkAsEnterpriseOwned();
     DevicePolicyCrosBrowserTest::SetUpInProcessBrowserTestFixture();