Standardize usage of virtual/override/final specifiers.

ash/display/root_window_transformers_unittest.cc

 // Copyright 2013 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/root_window_transformers.h"
 
 #include "ash/display/display_info.h"
 #include "ash/display/display_manager.h"
 #include "ash/host/root_window_transformer.h"
 #include "ash/magnifier/magnification_controller.h"
@@ skipping 22 matching lines @@
 
 class TestEventHandler : public ui::EventHandler {
  public:
   TestEventHandler() : target_root_(NULL),
                        touch_radius_x_(0.0),
                        touch_radius_y_(0.0),
                        scroll_x_offset_(0.0),
                        scroll_y_offset_(0.0),
                        scroll_x_offset_ordinal_(0.0),
                        scroll_y_offset_ordinal_(0.0) {}
-  virtual ~TestEventHandler() {}
+  ~TestEventHandler() override {}
 
-  virtual void OnMouseEvent(ui::MouseEvent* event) override {
+  void OnMouseEvent(ui::MouseEvent* event) override {
     if (event->flags() & ui::EF_IS_SYNTHESIZED)
       return;
     aura::Window* target = static_cast<aura::Window*>(event->target());
     mouse_location_ = event->root_location();
     target_root_ = target->GetRootWindow();
     event->StopPropagation();
   }
 
-  virtual void OnTouchEvent(ui::TouchEvent* event) override {
+  void OnTouchEvent(ui::TouchEvent* event) override {
     aura::Window* target = static_cast<aura::Window*>(event->target());
     // Only record when the target is the background which covers
     // entire root window.
     if (target->name() != kDesktopBackgroundView)
       return;
     touch_radius_x_ = event->radius_x();
     touch_radius_y_ = event->radius_y();
     event->StopPropagation();
   }
 
-  virtual void OnScrollEvent(ui::ScrollEvent* event) override {
+  void OnScrollEvent(ui::ScrollEvent* event) override {
     aura::Window* target = static_cast<aura::Window*>(event->target());
     // Only record when the target is the background which covers
     // entire root window.
     if (target->name() != kDesktopBackgroundView)
       return;
 
     if (event->type() == ui::ET_SCROLL) {
       scroll_x_offset_ = event->x_offset();
       scroll_y_offset_ = event->y_offset();
       scroll_x_offset_ordinal_ = event->x_offset_ordinal();
@@ skipping 326 matching lines @@
   // Y margin must be margin is (500 - 500/400 * 200) / 2 = 125.
   EXPECT_EQ("0,125,0,125", transformer->GetHostInsets().ToString());
 
   UpdateDisplay("200x400,500x500");
   // The aspect ratio is flipped, so X margin is now 125.
   transformer = test_api.CreateCurrentRootWindowTransformer();
   EXPECT_EQ("125,0,125,0", transformer->GetHostInsets().ToString());
 }
 
 }  // namespace ash