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

chrome/browser/ui/ash/multi_user/multi_user_window_manager_chromeos.cc

 // Copyright 2013 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/ui/ash/multi_user/multi_user_window_manager_chromeos.h"
 
 #include "ash/ash_switches.h"
 #include "ash/multi_profile_uma.h"
 #include "ash/root_window_controller.h"
 #include "ash/session/session_state_delegate.h"
@@ skipping 174 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(AnimationSetter);
 };
 
 // This class keeps track of all applications which were started for a user.
 // When an app gets created, the window will be tagged for that user. Note
 // that the destruction does not need to be tracked here since the universal
 // window observer will take care of that.
 class AppObserver : public extensions::AppWindowRegistry::Observer {
  public:
   explicit AppObserver(const std::string& user_id) : user_id_(user_id) {}
-  virtual ~AppObserver() {}
+  ~AppObserver() override {}
 
   // AppWindowRegistry::Observer overrides:
-  virtual void OnAppWindowAdded(extensions::AppWindow* app_window) override {
+  void OnAppWindowAdded(extensions::AppWindow* app_window) override {
     aura::Window* window = app_window->GetNativeWindow();
     DCHECK(window);
     MultiUserWindowManagerChromeOS::GetInstance()->SetWindowOwner(window,
                                                                   user_id_);
   }
 
  private:
   std::string user_id_;
 
   DISALLOW_COPY_AND_ASSIGN(AppObserver);
@@ skipping 520 matching lines @@
   DCHECK_EQ(visible, window->IsVisible());
 }
 
 int MultiUserWindowManagerChromeOS::GetAdjustedAnimationTimeInMS(
     int default_time_in_ms) const {
   return animation_speed_ == ANIMATION_SPEED_NORMAL ? default_time_in_ms :
       (animation_speed_ == ANIMATION_SPEED_FAST ? 10 : 0);
 }
 
 }  // namespace chrome