Standardize usage of virtual/override/final specifiers.

ash/display/shared_display_edge_indicator.cc

 // Copyright (c) 2012 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 "ash/display/shared_display_edge_indicator.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/coordinate_conversion.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/gfx/animation/throb_animation.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 namespace {
 
 const int kIndicatorAnimationDurationMs = 1000;
 
 class IndicatorView : public views::View {
  public:
   IndicatorView() {
   }
-  virtual ~IndicatorView() {
-  }
+  ~IndicatorView() override {}
 
   void SetColor(SkColor color) {
     color_ = color;
     SchedulePaint();
   }
 
   // views::Views overrides:
-  virtual void OnPaint(gfx::Canvas* canvas) override {
+  void OnPaint(gfx::Canvas* canvas) override {
     canvas->FillRect(gfx::Rect(bounds().size()), color_);
   }
 
  private:
   SkColor color_;
   DISALLOW_COPY_AND_ASSIGN(IndicatorView);
 };
 
 views::Widget* CreateWidget(const gfx::Rect& bounds,
                             views::View* contents_view) {
@@ skipping 56 matching lines @@
   int value = animation->CurrentValueBetween(0, 255);
   SkColor color = SkColorSetARGB(0xFF, value, value, value);
   if (src_indicator_)
     static_cast<IndicatorView*>(src_indicator_)->SetColor(color);
   if (dst_indicator_)
     static_cast<IndicatorView*>(dst_indicator_)->SetColor(color);
 
 }
 
 }  // namespace ash