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

chrome/browser/ui/cocoa/bookmarks/bookmark_context_menu_cocoa_controller.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.
 
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_context_menu_cocoa_controller.h"
 
 #include <vector>
 
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/ui/bookmarks/bookmark_context_menu_controller.h"
 #include "chrome/browser/ui/browser.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #import "ui/base/cocoa/menu_controller.h"
 
 @interface BookmarkContextMenuCocoaController (Private)
 - (void)willExecuteCommand:(int)command;
 @end
 
 class BookmarkContextMenuDelegateBridge :
     public BookmarkContextMenuControllerDelegate {
  public:
   BookmarkContextMenuDelegateBridge(
       BookmarkContextMenuCocoaController* controller)
       : controller_(controller) {
   }
 
-  virtual ~BookmarkContextMenuDelegateBridge() {
-  }
+  ~BookmarkContextMenuDelegateBridge() override {}
 
-  virtual void CloseMenu() override {
-    [controller_ cancelTracking];
-  }
+  void CloseMenu() override { [controller_ cancelTracking]; }
 
-  virtual void WillExecuteCommand(
+  void WillExecuteCommand(
       int command_id,
       const std::vector<const BookmarkNode*>& bookmarks) override {
     [controller_ willExecuteCommand:command_id];
   }
 
  private:
   BookmarkContextMenuCocoaController* controller_;  // Weak; owns us.
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkContextMenuDelegateBridge);
 };
@@ skipping 82 matching lines @@
   [bookmarkBarController_ closeFolderAndStopTrackingMenus];
   if (bookmarkNode_)
     [bookmarkBarController_ unhighlightBookmark:bookmarkNode_];
 }
 
 - (void)cancelTracking {
   [[menuController_ menu] cancelTracking];
 }
 
 @end