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

chrome/browser/extensions/extension_resource_protocols.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_resource_protocols.h"
 
 #include "base/files/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "base/path_service.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 15 matching lines @@
  public:
   ExtensionResourcesJob(net::URLRequest* request,
                         net::NetworkDelegate* network_delegate)
       : net::URLRequestFileJob(
             request, network_delegate, base::FilePath(),
             content::BrowserThread::GetBlockingPool()->
                 GetTaskRunnerWithShutdownBehavior(
                     base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)),
         weak_ptr_factory_(this) {}
 
-  virtual void Start() override;
+  void Start() override;
 
-  virtual bool IsRedirectResponse(GURL* location,
-                                  int* http_status_code) override;
+  bool IsRedirectResponse(GURL* location, int* http_status_code) override;
 
  protected:
-  virtual ~ExtensionResourcesJob() {}
+  ~ExtensionResourcesJob() override {}
 
   void ResolvePathDone(const base::FilePath& resolved_path);
 
  private:
   base::WeakPtrFactory<ExtensionResourcesJob> weak_ptr_factory_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionResourcesJob);
 };
@@ skipping 16 matching lines @@
     const base::FilePath& resolved_path) {
   DCHECK(thread_checker_.CalledOnValidThread());
   file_path_ = resolved_path;
   net::URLRequestFileJob::Start();
 }
 
 class ExtensionResourceProtocolHandler
     : public net::URLRequestJobFactory::ProtocolHandler {
  public:
   ExtensionResourceProtocolHandler() {}
-  virtual ~ExtensionResourceProtocolHandler() {}
+  ~ExtensionResourceProtocolHandler() override {}
 
-  virtual net::URLRequestJob* MaybeCreateJob(
+  net::URLRequestJob* MaybeCreateJob(
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate) const override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ExtensionResourceProtocolHandler);
 };
 
 // Creates URLRequestJobs for chrome-extension-resource:// URLs.
 net::URLRequestJob*
 ExtensionResourceProtocolHandler::MaybeCreateJob(
     net::URLRequest* request, net::NetworkDelegate* network_delegate) const {
   return new ExtensionResourcesJob(request, network_delegate);
 }
 
 }  // namespace
 
 net::URLRequestJobFactory::ProtocolHandler*
 CreateExtensionResourceProtocolHandler() {
   return new ExtensionResourceProtocolHandler();
 }