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

content/browser/appcache/appcache_update_job.h

Index: content/browser/appcache/appcache_update_job.h
diff --git a/content/browser/appcache/appcache_update_job.h b/content/browser/appcache/appcache_update_job.h
index 0ccb270e08c8da170fc905f8a6ea7959ab75d0a1..4d2d896ea74485cbb2757e145de08748a547eca7 100644
--- a/content/browser/appcache/appcache_update_job.h
+++ b/content/browser/appcache/appcache_update_job.h
@@ -46,7 +46,7 @@ class CONTENT_EXPORT AppCacheUpdateJob
   };
 
   AppCacheUpdateJob(AppCacheServiceImpl* service, AppCacheGroup* group);
-  virtual ~AppCacheUpdateJob();
+  ~AppCacheUpdateJob() override;
 
   // Triggers the update process or adds more info if this update is already
   // in progress.
@@ -114,7 +114,7 @@ class CONTENT_EXPORT AppCacheUpdateJob
     URLFetcher(const GURL& url,
                FetchType fetch_type,
                AppCacheUpdateJob* job);
-    virtual ~URLFetcher();
+    ~URLFetcher() override;
     void Start();
     FetchType fetch_type() const { return fetch_type_; }
     net::URLRequest* request() const { return request_.get(); }
@@ -134,12 +134,11 @@ class CONTENT_EXPORT AppCacheUpdateJob
 
    private:
     // URLRequest::Delegate overrides
-    virtual void OnReceivedRedirect(net::URLRequest* request,
-                                    const net::RedirectInfo& redirect_info,
-                                    bool* defer_redirect) override;
-    virtual void OnResponseStarted(net::URLRequest* request) override;
-    virtual void OnReadCompleted(net::URLRequest* request,
-                                 int bytes_read) override;
+    void OnReceivedRedirect(net::URLRequest* request,
+                            const net::RedirectInfo& redirect_info,
+                            bool* defer_redirect) override;
+    void OnResponseStarted(net::URLRequest* request) override;
+    void OnReadCompleted(net::URLRequest* request, int bytes_read) override;
 
     void AddConditionalHeaders(const net::HttpResponseHeaders* headers);
     void OnWriteComplete(int result);
@@ -165,23 +164,22 @@ class CONTENT_EXPORT AppCacheUpdateJob
   AppCacheResponseWriter* CreateResponseWriter();
 
   // Methods for AppCacheStorage::Delegate.
-  virtual void OnResponseInfoLoaded(AppCacheResponseInfo* response_info,
-                                    int64 response_id) override;
-  virtual void OnGroupAndNewestCacheStored(AppCacheGroup* group,
-                                           AppCache* newest_cache,
-                                           bool success,
-                                           bool would_exceed_quota) override;
-  virtual void OnGroupMadeObsolete(AppCacheGroup* group,
+  void OnResponseInfoLoaded(AppCacheResponseInfo* response_info,
+                            int64 response_id) override;
+  void OnGroupAndNewestCacheStored(AppCacheGroup* group,
+                                   AppCache* newest_cache,
                                    bool success,
-                                   int response_code) override;
+                                   bool would_exceed_quota) override;
+  void OnGroupMadeObsolete(AppCacheGroup* group,
+                           bool success,
+                           int response_code) override;
 
   // Methods for AppCacheHost::Observer.
-  virtual void OnCacheSelectionComplete(AppCacheHost* host) override {}  // N/A
-  virtual void OnDestructionImminent(AppCacheHost* host) override;
+  void OnCacheSelectionComplete(AppCacheHost* host) override {}  // N/A
+  void OnDestructionImminent(AppCacheHost* host) override;
 
   // Methods for AppCacheServiceImpl::Observer.
-  virtual void OnServiceReinitialized(
-      AppCacheStorageReference* old_storage) override;
+  void OnServiceReinitialized(AppCacheStorageReference* old_storage) override;
 
   void HandleCacheFailure(const AppCacheErrorDetails& details,
                           ResultType result,