Standardize usage of virtual/override/final specifiers.

components/constrained_window/constrained_window_views.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 "components/constrained_window/constrained_window_views.h"
 
 #include <algorithm>
 
 #include "components/constrained_window/constrained_window_views_client.h"
 #include "components/web_modal/popup_manager.h"
@@ skipping 25 matching lines @@
                                      const char *const native_window_property)
       : host_(host),
         target_widget_(target_widget),
         native_window_property_(native_window_property) {
     DCHECK(host_);
     DCHECK(target_widget_);
     host_->AddObserver(this);
     target_widget_->AddObserver(this);
   }
 
-  virtual ~WidgetModalDialogHostObserverViews() {
+  ~WidgetModalDialogHostObserverViews() override {
     if (host_)
       host_->RemoveObserver(this);
     target_widget_->RemoveObserver(this);
     target_widget_->SetNativeWindowProperty(native_window_property_, NULL);
   }
 
   // WidgetObserver overrides
-  virtual void OnWidgetClosing(views::Widget* widget) override {
-    delete this;
-  }
+  void OnWidgetClosing(views::Widget* widget) override { delete this; }
 
   // WebContentsModalDialogHostObserver overrides
-  virtual void OnPositionRequiresUpdate() override {
+  void OnPositionRequiresUpdate() override {
     UpdateWidgetModalDialogPosition(target_widget_, host_);
   }
 
-  virtual void OnHostDestroying() override {
+  void OnHostDestroying() override {
     host_->RemoveObserver(this);
     host_ = NULL;
   }
 
  private:
   ModalDialogHost* host_;
   views::Widget* target_widget_;
   const char* const native_window_property_;
 
   DISALLOW_COPY_AND_ASSIGN(WidgetModalDialogHostObserverViews);
@@ skipping 91 matching lines @@
       GetModalDialogHost(parent);
   if (host) {
     DCHECK_EQ(parent, host->GetHostView());
     ModalDialogHostObserver* dialog_host_observer =
         new WidgetModalDialogHostObserverViews(
             host, widget, kWidgetModalDialogHostObserverViewsKey);
     dialog_host_observer->OnPositionRequiresUpdate();
   }
   return widget;
 }