C++11 override style change for athena

athena/system/system_ui_impl.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 "athena/system/public/system_ui.h"
 
 #include "athena/screen/public/screen_manager.h"
 #include "athena/system/background_controller.h"
 #include "athena/system/orientation_controller.h"
 #include "athena/system/shutdown_dialog.h"
@@ skipping 16 matching lines @@
 // right.
 class SystemInfoView : public views::View {
  public:
   SystemInfoView(SystemUI::ColorScheme color_scheme)
       : time_view_(new TimeView(color_scheme)),
         status_icon_view_(new StatusIconContainerView(color_scheme)) {
     AddChildView(time_view_);
     AddChildView(status_icon_view_);
   }
 
-  virtual ~SystemInfoView() {
-  }
+  ~SystemInfoView() override {}
 
   // views::View:
   virtual gfx::Size GetPreferredSize() const override {
     // The view should be as wide as its parent view.
     return gfx::Size(0,
                      std::max(time_view_->GetPreferredSize().height(),
                               status_icon_view_->GetPreferredSize().height()));
   }
 
   virtual void Layout() override {
@@ skipping 22 matching lines @@
 };
 
 class SystemUIImpl : public SystemUI {
  public:
   SystemUIImpl(scoped_refptr<base::TaskRunner> blocking_task_runner)
       : orientation_controller_(new OrientationController()),
         background_container_(nullptr) {
     orientation_controller_->InitWith(blocking_task_runner);
   }
 
-  virtual ~SystemUIImpl() {
+  ~SystemUIImpl() override {
     // Stops file watching now if exists. Waiting until message loop shutdon
     // leads to FilePathWatcher crash.
     orientation_controller_->Shutdown();
   }
 
   void Init() {
     ScreenManager* screen_manager = ScreenManager::Get();
     background_container_ = screen_manager->CreateContainer(
         ScreenManager::ContainerParams("AthenaBackground", CP_BACKGROUND));
     background_container_->SetLayoutManager(
@@ skipping 49 matching lines @@
 }
 
 // static
 void SystemUI::Shutdown() {
   CHECK(instance);
   delete instance;
   instance = nullptr;
 }
 
 }  // namespace athena