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

chrome/browser/media/webrtc_log_uploader.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_MEDIA_WEBRTC_LOG_UPLOADER_H_
 #define CHROME_BROWSER_MEDIA_WEBRTC_LOG_UPLOADER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 30 matching lines @@
   std::string local_log_id;
 };
 
 // WebRtcLogUploader uploads WebRTC logs, keeps count of how many logs have
 // been started and denies further logs if a limit is reached. It also adds
 // the timestamp and report ID of the uploded log to a text file. There must
 // only be one object of this type.
 class WebRtcLogUploader : public net::URLFetcherDelegate {
  public:
   WebRtcLogUploader();
-  virtual ~WebRtcLogUploader();
+  ~WebRtcLogUploader() override;
 
   // net::URLFetcherDelegate implementation.
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) override;
-  virtual void OnURLFetchUploadProgress(const net::URLFetcher* source,
-                                        int64 current, int64 total) override;
+  void OnURLFetchComplete(const net::URLFetcher* source) override;
+  void OnURLFetchUploadProgress(const net::URLFetcher* source,
+                                int64 current,
+                                int64 total) override;
 
   // Returns true is number of logs limit is not reached yet. Increases log
   // count if true is returned. Must be called before UploadLog().
   bool ApplyForStartLogging();
 
   // Notifies that logging has stopped and that the log should not be uploaded.
   // Decreases log count. May only be called if permission to log has been
   // granted by calling ApplyForStartLogging() and getting true in return.
   // After this function has been called, a new permission must be granted.
   // Call either this function or LoggingStoppedDoUpload().
@@ skipping 102 matching lines @@
   // Only accessed on the UI thread.
   UploadDoneDataMap upload_done_data_;
 
   // When shutting down, don't create new URLFetchers.
   bool shutting_down_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcLogUploader);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_WEBRTC_LOG_UPLOADER_H_