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

chrome/browser/ui/cocoa/global_error_bubble_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/global_error_bubble_controller.h"
 
 #include "base/logging.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 20 matching lines @@
 
 namespace GlobalErrorBubbleControllerInternal {
 
 // This is the bridge to the C++ GlobalErrorBubbleViewBase object.
 class Bridge : public GlobalErrorBubbleViewBase {
  public:
   Bridge(GlobalErrorBubbleController* controller) : controller_(controller) {
   }
 
  private:
-  virtual void CloseBubbleView() override {
-    [controller_ close];
-  }
+  void CloseBubbleView() override { [controller_ close]; }
 
   GlobalErrorBubbleController* controller_;  // Weak, owns this.
 };
 
 }  // namespace GlobalErrorBubbleControllerInternal
 
 @implementation GlobalErrorBubbleController
 
 + (GlobalErrorBubbleViewBase*)showForBrowser:(Browser*)browser
     error:(const base::WeakPtr<GlobalErrorWithStandardBubble>&)error {
@@ skipping 101 matching lines @@
   [self close];
 }
 
 @end
 
 GlobalErrorBubbleViewBase* GlobalErrorBubbleViewBase::ShowStandardBubbleView(
     Browser* browser,
     const base::WeakPtr<GlobalErrorWithStandardBubble>& error) {
   return [GlobalErrorBubbleController showForBrowser:browser error:error];
 }