Standardize usage of virtual/override/final specifiers.

ash/wm/maximize_mode/maximize_mode_controller.h

 // 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.
 
 #ifndef ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_
 #define ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_
 
 #include "ash/accelerometer/accelerometer_observer.h"
 #include "ash/ash_export.h"
 #include "ash/display/display_controller.h"
@@ skipping 42 matching lines @@
   class Observer {
    public:
     // Invoked whenever |rotation_locked_| is changed.
     virtual void OnRotationLockChanged(bool rotation_locked) {}
 
    protected:
     virtual ~Observer() {}
   };
 
   MaximizeModeController();
-  virtual ~MaximizeModeController();
+  ~MaximizeModeController() override;
 
   bool ignore_display_configuration_updates() const {
     return ignore_display_configuration_updates_;
   }
 
   // True if |rotation_lock_| has been set, and OnAccelerometerUpdated will not
   // change the display rotation.
   bool rotation_locked() {
     return rotation_locked_;
   }
@@ skipping 28 matching lines @@
   void AddWindow(aura::Window* window);
 
   // TODO(jonross): move this into the destructor. Currently separated as
   // ShellOberver notifies of maximize mode ending, and the observers end up
   // attempting to access MaximizeModeController via the Shell. If done in
   // destructor the controller is null, and the observers segfault.
   // Shuts down down the MaximizeModeWindowManager and notifies all observers.
   void Shutdown();
 
   // AccelerometerObserver:
-  virtual void OnAccelerometerUpdated(
-      const ui::AccelerometerUpdate& update) override;
+  void OnAccelerometerUpdated(const ui::AccelerometerUpdate& update) override;
 
   // ShellObserver:
-  virtual void OnAppTerminating() override;
-  virtual void OnMaximizeModeStarted() override;
-  virtual void OnMaximizeModeEnded() override;
+  void OnAppTerminating() override;
+  void OnMaximizeModeStarted() override;
+  void OnMaximizeModeEnded() override;
 
   // DisplayController::Observer:
-  virtual void OnDisplayConfigurationChanged() override;
+  void OnDisplayConfigurationChanged() override;
 
 #if defined(OS_CHROMEOS)
   // PowerManagerClient::Observer:
   virtual void LidEventReceived(bool open,
                                 const base::TimeTicks& time) override;
   virtual void SuspendImminent() override;
   virtual void SuspendDone(const base::TimeDelta& sleep_duration) override;
 #endif  // OS_CHROMEOS
 
  private:
@@ skipping 88 matching lines @@
 
   // Tracks when the lid is closed. Used to prevent entering maximize mode.
   bool lid_is_closed_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_