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

chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h

 // Copyright 2013 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 CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_ISOLATED_FILE_SYSTEM_MESSAGE_FILTER_H_
 #define CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_ISOLATED_FILE_SYSTEM_MESSAGE_FILTER_H_
 
 #include <set>
 #include <string>
 
@@ skipping 20 matching lines @@
 namespace chrome {
 
 class PepperIsolatedFileSystemMessageFilter
     : public ppapi::host::ResourceMessageFilter {
  public:
   static PepperIsolatedFileSystemMessageFilter* Create(
       PP_Instance instance,
       content::BrowserPpapiHost* host);
 
   // ppapi::host::ResourceMessageFilter implementation.
-  virtual scoped_refptr<base::TaskRunner> OverrideTaskRunnerForMessage(
+  scoped_refptr<base::TaskRunner> OverrideTaskRunnerForMessage(
       const IPC::Message& msg) override;
-  virtual int32_t OnResourceMessageReceived(
+  int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) override;
 
  private:
   PepperIsolatedFileSystemMessageFilter(int render_process_id,
                                         const base::FilePath& profile_directory,
                                         const GURL& document_url,
                                         ppapi::host::PpapiHost* ppapi_host_);
 
-  virtual ~PepperIsolatedFileSystemMessageFilter();
+  ~PepperIsolatedFileSystemMessageFilter() override;
 
   Profile* GetProfile();
 
   // Returns filesystem id of isolated filesystem if valid, or empty string
   // otherwise.  This must run on the UI thread because ProfileManager only
   // allows access on that thread.
   std::string CreateCrxFileSystem(Profile* profile);
 
   int32_t OnOpenFileSystem(ppapi::host::HostMessageContext* context,
                            PP_IsolatedFileSystemType_Private type);
@@ skipping 10 matching lines @@
 
   // Set of origins that can use CrxFs private APIs from NaCl.
   std::set<std::string> allowed_crxfs_origins_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperIsolatedFileSystemMessageFilter);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_ISOLATED_FILE_SYSTEM_MESSAGE_FILTER_H_