Standardize usage of virtual/override/final specifiers.

ash/wm/window_modality_controller_unittest.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 "ui/wm/core/window_modality_controller.h"
 
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/child_modal_window.h"
 #include "ash/wm/window_util.h"
@@ skipping 297 matching lines @@
   EXPECT_FALSE(view->got_capture_lost());
   EXPECT_FALSE(view->got_press());
 }
 
 class TouchTrackerWindowDelegate : public aura::test::TestWindowDelegate {
  public:
   TouchTrackerWindowDelegate()
       : received_touch_(false),
         last_event_type_(ui::ET_UNKNOWN) {
   }
-  virtual ~TouchTrackerWindowDelegate() {}
+  ~TouchTrackerWindowDelegate() override {}
 
   void reset() {
     received_touch_ = false;
     last_event_type_ = ui::ET_UNKNOWN;
   }
 
   bool received_touch() const { return received_touch_; }
   ui::EventType last_event_type() const { return last_event_type_; }
 
  private:
   // Overridden from aura::test::TestWindowDelegate.
-  virtual void OnTouchEvent(ui::TouchEvent* event) override {
+  void OnTouchEvent(ui::TouchEvent* event) override {
     received_touch_ = true;
     last_event_type_ = event->type();
     aura::test::TestWindowDelegate::OnTouchEvent(event);
   }
 
   bool received_touch_;
   ui::EventType last_event_type_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchTrackerWindowDelegate);
 };
@@ skipping 236 matching lines @@
   EXPECT_TRUE(wm::IsActiveWindow(w4.get()));
 
   wm::ActivateWindow(w3.get());
   EXPECT_TRUE(wm::IsActiveWindow(w4.get()));
 
   wm::ActivateWindow(w4.get());
   EXPECT_TRUE(wm::IsActiveWindow(w4.get()));
 }
 
 }  // namespace ash