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

chrome/browser/ui/cocoa/hung_renderer_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/hung_renderer_controller.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
@@ skipping 28 matching lines @@
     : public content::WebContentsObserver {
  public:
   HungRendererWebContentsObserverBridge(WebContents* web_contents,
                                         HungRendererController* controller)
     : content::WebContentsObserver(web_contents),
       controller_(controller) {
   }
 
  protected:
   // WebContentsObserver overrides:
-  virtual void RenderProcessGone(base::TerminationStatus status) override {
+  void RenderProcessGone(base::TerminationStatus status) override {
     [controller_ renderProcessGone];
   }
-  virtual void WebContentsDestroyed() override {
-    [controller_ renderProcessGone];
-  }
+  void WebContentsDestroyed() override { [controller_ renderProcessGone]; }
 
  private:
   HungRendererController* controller_;  // weak
 
   DISALLOW_COPY_AND_ASSIGN(HungRendererWebContentsObserverBridge);
 };
 
 @implementation HungRendererController
 
 - (id)initWithWindowNibName:(NSString*)nibName {
@@ skipping 165 matching lines @@
     [g_instance showForWebContents:contents];
   }
 }
 
 void HideHungRendererDialog(WebContents* contents) {
   if (!logging::DialogsAreSuppressed() && g_instance)
     [g_instance endForWebContents:contents];
 }
 
 }  // namespace chrome