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

chrome/renderer/pepper/pepper_flash_drm_renderer_host.h

 // 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.
 
 #ifndef CHROME_RENDERER_PEPPER_PEPPER_FLASH_DRM_RENDERER_HOST_H_
 #define CHROME_RENDERER_PEPPER_PEPPER_FLASH_DRM_RENDERER_HOST_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "ppapi/host/resource_host.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace content {
 class RendererPpapiHost;
 }
 
 // TODO(raymes): This is only needed until we move FileRef resources to the
 // browser. After that, get rid of this class altogether.
 class PepperFlashDRMRendererHost : public ppapi::host::ResourceHost {
  public:
   PepperFlashDRMRendererHost(content::RendererPpapiHost* host,
                              PP_Instance instance,
                              PP_Resource resource);
-  virtual ~PepperFlashDRMRendererHost();
+  ~PepperFlashDRMRendererHost() override;
 
-  virtual int32_t OnResourceMessageReceived(
+  int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) override;
 
  private:
   int32_t OnGetVoucherFile(ppapi::host::HostMessageContext* context);
 
   void DidCreateFileRefHosts(
       const ppapi::host::ReplyMessageContext& reply_context,
       const base::FilePath& external_path,
       int renderer_pending_host_id,
       const std::vector<int>& browser_pending_host_ids);
 
   // Non-owning pointer.
   content::RendererPpapiHost* renderer_ppapi_host_;
 
   base::WeakPtrFactory<PepperFlashDRMRendererHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperFlashDRMRendererHost);
 };
 
 #endif  // CHROME_RENDERER_PEPPER_PEPPER_FLASH_DRM_RENDERER_HOST_H_