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

chrome/browser/renderer_host/pepper/pepper_output_protection_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_OUTPUT_PROTECTION_MESSAGE_FILTER_H_
 #define CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_OUTPUT_PROTECTION_MESSAGE_FILTER_H_
 
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/host/resource_message_filter.h"
 
@@ skipping 14 matching lines @@
  public:
   PepperOutputProtectionMessageFilter(content::BrowserPpapiHost* host,
                                       PP_Instance instance);
 
  private:
 #if defined(OS_CHROMEOS)
   class Delegate;
 #endif
 
   // ppapi::host::ResourceMessageFilter overrides.
-  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;
 
-  virtual ~PepperOutputProtectionMessageFilter();
+  ~PepperOutputProtectionMessageFilter() override;
 
   int32_t OnQueryStatus(ppapi::host::HostMessageContext* context);
   int32_t OnEnableProtection(ppapi::host::HostMessageContext* context,
                              uint32_t desired_method_mask);
 
 #if defined(OS_CHROMEOS)
   // Delegator. Should be deleted in UI thread.
   Delegate* delegate_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(PepperOutputProtectionMessageFilter);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_OUTPUT_PROTECTION_MESSAGE_FILTER_H_