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

content/renderer/pepper/pepper_media_stream_track_host_base.h

 // Copyright 2014 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 CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_
 
 #include "base/compiler_specific.h"
 #include "content/common/content_export.h"
 #include "ppapi/host/resource_host.h"
 #include "ppapi/shared_impl/media_stream_buffer_manager.h"
 
 namespace content {
 
 class RendererPpapiHost;
 
 class PepperMediaStreamTrackHostBase
     : public ppapi::host::ResourceHost,
       public ppapi::MediaStreamBufferManager::Delegate {
  protected:
   PepperMediaStreamTrackHostBase(RendererPpapiHost* host,
                                  PP_Instance instance,
                                  PP_Resource resource);
-  virtual ~PepperMediaStreamTrackHostBase();
+  ~PepperMediaStreamTrackHostBase() override;
 
   enum TrackType {
     kRead,
     kWrite
   };
   bool InitBuffers(int32_t number_of_buffers,
                    int32_t buffer_size,
                    TrackType track_type);
 
   ppapi::MediaStreamBufferManager* buffer_manager() { return &buffer_manager_; }
 
   // Sends a buffer index to the corresponding MediaStreamTrackResourceBase
   // via an IPC message. The resource adds the buffer index into its
   // |buffer_manager_| for reading or writing.
   // Also see |MediaStreamBufferManager|.
   void SendEnqueueBufferMessageToPlugin(int32_t index);
 
   // Sends a set of buffer indices to the corresponding
   // MediaStreamTrackResourceBase via an IPC message.
   // The resource adds the buffer indices into its
   // |frame_buffer_| for reading or writing. Also see |MediaStreamFrameBuffer|.
   void SendEnqueueBuffersMessageToPlugin(const std::vector<int32_t>& indices);
 
   // ResourceMessageHandler overrides:
-  virtual int32_t OnResourceMessageReceived(
+  int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) override;
 
   // Message handlers:
   virtual int32_t OnHostMsgEnqueueBuffer(
       ppapi::host::HostMessageContext* context, int32_t index);
 
  private:
   // Subclasses must implement this method to clean up when the track is closed.
   virtual void OnClose() = 0;
 
   // Message handlers:
   int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
 
   RendererPpapiHost* host_;
 
   ppapi::MediaStreamBufferManager buffer_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperMediaStreamTrackHostBase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_