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

content/renderer/media/rtc_data_channel_handler.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 CONTENT_RENDERER_MEDIA_RTC_DATA_CHANNEL_HANDLER_H_
 #define CONTENT_RENDERER_MEDIA_RTC_DATA_CHANNEL_HANDLER_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/threading/non_thread_safe.h"
 #include "content/common/content_export.h"
@@ skipping 27 matching lines @@
   virtual unsigned short maxRetransmits() const override;
   virtual blink::WebString protocol() const override;
   virtual bool negotiated() const override;
   virtual unsigned short id() const override;
   virtual unsigned long bufferedAmount() override;
   virtual bool sendStringData(const blink::WebString& data) override;
   virtual bool sendRawData(const char* data, size_t length) override;
   virtual void close() override;
 
   // webrtc::DataChannelObserver implementation.
-  virtual void OnStateChange() override;
-  virtual void OnMessage(const webrtc::DataBuffer& buffer) override;
+  void OnStateChange() override;
+  void OnMessage(const webrtc::DataBuffer& buffer) override;
 
  private:
   void RecordMessageSent(size_t num_bytes);
 
   scoped_refptr<webrtc::DataChannelInterface> channel_;
   blink::WebRTCDataChannelHandlerClient* webkit_client_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RTC_DATA_CHANNEL_HANDLER_H_