Standardize usage of virtual/override/final in chrome/renderer/

chrome/renderer/chrome_render_view_observer.h

Index: chrome/renderer/chrome_render_view_observer.h
diff --git a/chrome/renderer/chrome_render_view_observer.h b/chrome/renderer/chrome_render_view_observer.h
index 843e8bca0ba04c06983cf9bca6dbf96bc34ab7f4..0a6abce35881f408da8ab97613e4c5fbe9198237 100644
--- a/chrome/renderer/chrome_render_view_observer.h
+++ b/chrome/renderer/chrome_render_view_observer.h
@@ -49,16 +49,16 @@ class ChromeRenderViewObserver : public content::RenderViewObserver {
       content::RenderView* render_view,
       web_cache::WebCacheRenderProcessObserver*
           web_cache_render_process_observer);
-  virtual ~ChromeRenderViewObserver();
+  ~ChromeRenderViewObserver() override;
 
  private:
   // RenderViewObserver implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
-  virtual void DidStartLoading() override;
-  virtual void DidStopLoading() override;
-  virtual void DidCommitProvisionalLoad(blink::WebLocalFrame* frame,
-                                        bool is_new_navigation) override;
-  virtual void Navigate(const GURL& url) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+  void DidStartLoading() override;
+  void DidStopLoading() override;
+  void DidCommitProvisionalLoad(blink::WebLocalFrame* frame,
+                                bool is_new_navigation) override;
+  void Navigate(const GURL& url) override;
 
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
   void OnWebUIJavaScript(const base::string16& javascript);