Standardize usage of virtual/override/final specifiers.

ash/display/screen_ash.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_DISPLAY_SCREEN_ASH_H_
 #define ASH_DISPLAY_SCREEN_ASH_H_
 
 #include "ash/ash_export.h"
 #include "base/compiler_specific.h"
 #include "base/observer_list.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/screen.h"
 
 namespace gfx {
 class Rect;
 }
 
 namespace ash {
 namespace  internal {
 class DisplayManager;
 }
 
 // Aura implementation of gfx::Screen. Implemented here to avoid circular
 // dependencies.
 class ASH_EXPORT ScreenAsh : public gfx::Screen {
  public:
   ScreenAsh();
-  virtual ~ScreenAsh();
+  ~ScreenAsh() override;
 
   // Finds the display that contains |point| in screeen coordinates.
   // Returns invalid display if there is no display that can satisfy
   // the condition.
   static gfx::Display FindDisplayContainingPoint(const gfx::Point& point);
 
   // Returns the bounds for maximized windows in parent coordinates.
   // Maximized windows trigger auto-hiding the shelf.
   static gfx::Rect GetMaximizedWindowBoundsInParent(aura::Window* window);
 
@@ skipping 15 matching lines @@
 
   // Returns a gfx::Display object for secondary display. Returns
   // invalid display if there is no secondary display connected.
   static const gfx::Display& GetSecondaryDisplay();
 
   // Returns a gfx::Display object for the specified id.  Returns
   // invalid display if no such display is connected.
   static const gfx::Display& GetDisplayForId(int64 display_id);
 
   // gfx::Screen overrides:
-  virtual gfx::Point GetCursorScreenPoint() override;
-  virtual gfx::NativeWindow GetWindowUnderCursor() override;
-  virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point)
-      override;
-  virtual int GetNumDisplays() const override;
-  virtual std::vector<gfx::Display> GetAllDisplays() const override;
-  virtual gfx::Display GetDisplayNearestWindow(
-      gfx::NativeView view) const override;
-  virtual gfx::Display GetDisplayNearestPoint(
-      const gfx::Point& point) const override;
-  virtual gfx::Display GetDisplayMatching(
-      const gfx::Rect& match_rect) const override;
-  virtual gfx::Display GetPrimaryDisplay() const override;
-  virtual void AddObserver(gfx::DisplayObserver* observer) override;
-  virtual void RemoveObserver(gfx::DisplayObserver* observer) override;
+  gfx::Point GetCursorScreenPoint() override;
+  gfx::NativeWindow GetWindowUnderCursor() override;
+  gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) override;
+  int GetNumDisplays() const override;
+  std::vector<gfx::Display> GetAllDisplays() const override;
+  gfx::Display GetDisplayNearestWindow(gfx::NativeView view) const override;
+  gfx::Display GetDisplayNearestPoint(const gfx::Point& point) const override;
+  gfx::Display GetDisplayMatching(const gfx::Rect& match_rect) const override;
+  gfx::Display GetPrimaryDisplay() const override;
+  void AddObserver(gfx::DisplayObserver* observer) override;
+  void RemoveObserver(gfx::DisplayObserver* observer) override;
 
  private:
   friend class DisplayManager;
 
   // Notifies observers of display configuration changes.
   void NotifyMetricsChanged(const gfx::Display& display, uint32_t metrics);
   void NotifyDisplayAdded(const gfx::Display& display);
   void NotifyDisplayRemoved(const gfx::Display& display);
 
   // Creates a screen that can be used during shutdown.
   // It simply has a copy of the displays.
   gfx::Screen* CloneForShutdown();
 
   ObserverList<gfx::DisplayObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenAsh);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_SCREEN_ASH_H_