Standardize usage of virtual/override/final in net/

net/http/failing_http_transaction_factory.h

 // Copyright 2014 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.
 
 #ifndef NET_FAILING_HTTP_TRANSACTION_FACTORY_H_
 #define NET_FAILING_HTTP_TRANSACTION_FACTORY_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "net/base/net_errors.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_transaction.h"
 #include "net/http/http_transaction_factory.h"
 
 namespace net {
 
 class HttpCache;
 class HttpNetworkSession;
 
 // Creates transactions that always (asynchronously) return a specified
 // error.  The error is returned asynchronously, just after the transaction is
 // started.
 class NET_EXPORT FailingHttpTransactionFactory : public HttpTransactionFactory {
  public:
   // The caller must guarantee that |session| outlives this object.
   FailingHttpTransactionFactory(HttpNetworkSession* session, Error error);
-  virtual ~FailingHttpTransactionFactory();
+  ~FailingHttpTransactionFactory() override;
 
   // HttpTransactionFactory:
-  virtual int CreateTransaction(
-      RequestPriority priority,
-      scoped_ptr<HttpTransaction>* trans) override;
-  virtual HttpCache* GetCache() override;
-  virtual HttpNetworkSession* GetSession() override;
+  int CreateTransaction(RequestPriority priority,
+                        scoped_ptr<HttpTransaction>* trans) override;
+  HttpCache* GetCache() override;
+  HttpNetworkSession* GetSession() override;
 
  private:
   HttpNetworkSession* session_;
   Error error_;
 };
 
 }  // namespace net
 
 #endif  // NET_FAILING_HTTP_TRANSACTION_FACTORY_H_