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

chrome/browser/ui/views/menu_controller_test.cc

 // Copyright 2014 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/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/views/menu_test_base.h"
 #include "ui/views/controls/menu/menu_item_view.h"
 #include "ui/views/controls/menu/submenu_view.h"
 
 template<ui::KeyboardCode KEYCODE, int EXPECTED_COMMAND>
 class MenuControllerMnemonicTest : public MenuTestBase {
  public:
   MenuControllerMnemonicTest() {
   }
 
-  virtual ~MenuControllerMnemonicTest() {
-  }
+  ~MenuControllerMnemonicTest() override {}
 
   // MenuTestBase overrides:
-  virtual void BuildMenu(views::MenuItemView* menu) override {
+  void BuildMenu(views::MenuItemView* menu) override {
     ASSERT_NE(ui::VKEY_DIVIDE, '/');
     menu->AppendMenuItemWithLabel(1, base::ASCIIToUTF16("One&/"));
     menu->AppendMenuItemWithLabel(2, base::ASCIIToUTF16("Two"));
   }
 
-  virtual void DoTestWithMenuOpen() {
+  void DoTestWithMenuOpen() override {
     ASSERT_TRUE(menu()->GetSubmenu()->IsShowing());
     KeyPress(KEYCODE,
              CreateEventTask(this, &MenuControllerMnemonicTest::Step2));
   }
 
   void Step2() {
     ASSERT_EQ(EXPECTED_COMMAND, last_command());
     if (EXPECTED_COMMAND == 0) {
       KeyPress(ui::VKEY_ESCAPE,
                CreateEventTask(this, &MenuControllerMnemonicTest::Step3));
@@ skipping 21 matching lines @@
 // Pressing a key which matches the first letter of the menu item's title
 // should execute the command for that menu item.
 typedef MenuControllerMnemonicTest<ui::VKEY_T, 2>
     MenuControllerMnemonicTestTitleMatch;
 VIEW_TEST(MenuControllerMnemonicTestTitleMatch, TitleMatch);
 
 // Pressing an arbitrary key should not execute any commands.
 typedef MenuControllerMnemonicTest<ui::VKEY_A, 0>
     MenuControllerMnemonicTestNoMatch;
 VIEW_TEST(MenuControllerMnemonicTestNoMatch, NoMatch);