Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/cocoa/web_contents_modal_dialog_manager_cocoa.mm

 // Copyright (c) 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 "components/web_modal/web_contents_modal_dialog_manager.h"
 
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
 #include "components/web_modal/single_web_contents_dialog_manager.h"
 
 using web_modal::NativeWebContentsModalDialog;
 
 namespace {
 
 class NativeWebContentsModalDialogManagerCocoa
     : public web_modal::SingleWebContentsDialogManager {
  public:
   NativeWebContentsModalDialogManagerCocoa(
       NativeWebContentsModalDialog dialog)
       : dialog_(dialog) {
   }
 
-  virtual ~NativeWebContentsModalDialogManagerCocoa() {
-  }
+  ~NativeWebContentsModalDialogManagerCocoa() override {}
 
   // SingleWebContentsDialogManager overrides
-  virtual void Show() override {
+  void Show() override {
     GetConstrainedWindowMac(dialog())->ShowWebContentsModalDialog();
   }
 
-  virtual void Hide() override {
-  }
+  void Hide() override {}
 
-  virtual void Close() override {
+  void Close() override {
     GetConstrainedWindowMac(dialog())->CloseWebContentsModalDialog();
   }
 
-  virtual void Focus() override {
+  void Focus() override {
     GetConstrainedWindowMac(dialog())->FocusWebContentsModalDialog();
   }
 
-  virtual void Pulse() override {
+  void Pulse() override {
     GetConstrainedWindowMac(dialog())->PulseWebContentsModalDialog();
   }
 
-  virtual void HostChanged(
-      web_modal::WebContentsModalDialogHost* new_host) override {
-  }
+  void HostChanged(web_modal::WebContentsModalDialogHost* new_host) override {}
 
-  virtual NativeWebContentsModalDialog dialog() override {
-    return dialog_;
-  }
+  NativeWebContentsModalDialog dialog() override { return dialog_; }
 
  private:
   static ConstrainedWindowMac* GetConstrainedWindowMac(
       NativeWebContentsModalDialog dialog) {
     return static_cast<ConstrainedWindowMac*>(dialog);
   }
 
   // In mac this is a pointer to a ConstrainedWindowMac.
   // TODO(gbillock): Replace this casting system with a more typesafe call path.
   NativeWebContentsModalDialog dialog_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeWebContentsModalDialogManagerCocoa);
 };
 
 }  // namespace
 
 namespace web_modal {
 
 SingleWebContentsDialogManager*
     WebContentsModalDialogManager::CreateNativeWebModalManager(
         NativeWebContentsModalDialog dialog,
         SingleWebContentsDialogManagerDelegate* native_delegate) {
   return new NativeWebContentsModalDialogManagerCocoa(dialog);
 }
 
 }  // namespace web_modal