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

chrome/browser/renderer_host/pepper/pepper_platform_verification_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_PLATFORM_VERIFICATION_MESSAGE_FILTER_H_
 #define CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_PLATFORM_VERIFICATION_MESSAGE_FILTER_H_
 
 #include "chrome/browser/chromeos/attestation/platform_verification_flow.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/host/resource_message_filter.h"
@@ skipping 11 matching lines @@
 namespace chrome {
 
 // This filter handles messages for platform verification on the UI thread.
 class PepperPlatformVerificationMessageFilter
     : public ppapi::host::ResourceMessageFilter {
  public:
   PepperPlatformVerificationMessageFilter(content::BrowserPpapiHost* host,
                                           PP_Instance instance);
 
  private:
-  virtual ~PepperPlatformVerificationMessageFilter();
+  ~PepperPlatformVerificationMessageFilter() override;
 
   // ppapi::host::ResourceMessageFilter overrides.
-  virtual scoped_refptr<base::TaskRunner> OverrideTaskRunnerForMessage(
+  scoped_refptr<base::TaskRunner> OverrideTaskRunnerForMessage(
       const IPC::Message& message) override;
-  virtual int32_t OnResourceMessageReceived(
+  int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) override;
 
   int32_t OnChallengePlatform(ppapi::host::HostMessageContext* context,
                               const std::string& service_id,
                               const std::vector<uint8_t>& challenge);
 
   // PlatformVerificationFlow callbacks.
   void ChallengePlatformCallback(
       ppapi::host::ReplyMessageContext reply_context,
       chromeos::attestation::PlatformVerificationFlow::Result challenge_result,
       const std::string& signed_data,
       const std::string& signature,
       const std::string& platform_key_certificate);
 
   // Used to lookup the WebContents associated with this PP_Instance.
   int render_process_id_;
   int render_frame_id_;
 
   // Must only be accessed on the UI thread.
   scoped_refptr<chromeos::attestation::PlatformVerificationFlow> pv_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPlatformVerificationMessageFilter);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_PLATFORM_VERIFICATION_MESSAGE_FILTER_H_