replace OVERRIDE and FINAL with override and final in ash/

ash/shelf/app_list_button.h

Index: ash/shelf/app_list_button.h
diff --git a/ash/shelf/app_list_button.h b/ash/shelf/app_list_button.h
index 9fc27c5fc442f72c0660574311ffbd5e3a68e896..97dafb6919b8d93028b69414c82454e2f7f90be1 100644
--- a/ash/shelf/app_list_button.h
+++ b/ash/shelf/app_list_button.h
@@ -28,18 +28,18 @@ class AppListButton : public views::ImageButton {
 
  protected:
   // views::ImageButton overrides:
-  virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseCaptureLost() OVERRIDE;
-  virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
-  virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
+  virtual bool OnMousePressed(const ui::MouseEvent& event) override;
+  virtual void OnMouseReleased(const ui::MouseEvent& event) override;
+  virtual void OnMouseCaptureLost() override;
+  virtual bool OnMouseDragged(const ui::MouseEvent& event) override;
+  virtual void OnMouseMoved(const ui::MouseEvent& event) override;
+  virtual void OnMouseEntered(const ui::MouseEvent& event) override;
+  virtual void OnMouseExited(const ui::MouseEvent& event) override;
+  virtual void OnPaint(gfx::Canvas* canvas) override;
+  virtual void GetAccessibleState(ui::AXViewState* state) override;
 
   // ui::EventHandler overrides:
-  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
+  virtual void OnGestureEvent(ui::GestureEvent* event) override;
 
  private:
   // Toggles the active state for painting the background and schedules a paint.