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

chrome/browser/renderer_host/safe_browsing_resource_throttle.h

Index: chrome/browser/renderer_host/safe_browsing_resource_throttle.h
diff --git a/chrome/browser/renderer_host/safe_browsing_resource_throttle.h b/chrome/browser/renderer_host/safe_browsing_resource_throttle.h
index aa4a40027b042a44ba54ba2caf838c73b94096be..c11db662915de6f7f9db976c0f844349e774a01a 100644
--- a/chrome/browser/renderer_host/safe_browsing_resource_throttle.h
+++ b/chrome/browser/renderer_host/safe_browsing_resource_throttle.h
@@ -54,14 +54,14 @@ class SafeBrowsingResourceThrottle
                                SafeBrowsingService* safe_browsing);
 
   // content::ResourceThrottle implementation (called on IO thread):
-  virtual void WillStartRequest(bool* defer) override;
-  virtual void WillRedirectRequest(const GURL& new_url, bool* defer) override;
-  virtual const char* GetNameForLogging() const override;
+  void WillStartRequest(bool* defer) override;
+  void WillRedirectRequest(const GURL& new_url, bool* defer) override;
+  const char* GetNameForLogging() const override;
 
   // SafeBrowsingDabaseManager::Client implementation (called on IO thread):
-  virtual void OnCheckBrowseUrlResult(const GURL& url,
-                                      SBThreatType result,
-                                      const std::string& metadata) override;
+  void OnCheckBrowseUrlResult(const GURL& url,
+                              SBThreatType result,
+                              const std::string& metadata) override;
 
  private:
   // Describes what phase of the check a throttle is in.
@@ -78,7 +78,7 @@ class SafeBrowsingResourceThrottle
     DEFERRED_REDIRECT,
   };
 
-  virtual ~SafeBrowsingResourceThrottle();
+  ~SafeBrowsingResourceThrottle() override;
 
   // SafeBrowsingService::UrlCheckCallback implementation.
   void OnBlockingPageComplete(bool proceed);