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

content/browser/tracing/trace_uploader.h

Index: content/browser/tracing/trace_uploader.h
diff --git a/content/browser/tracing/trace_uploader.h b/content/browser/tracing/trace_uploader.h
index bfc4385018283e3a5aea1d52628cb44860624d62..323a4c54668b12f6f6fabbb7f98c6919fa09a259 100644
--- a/content/browser/tracing/trace_uploader.h
+++ b/content/browser/tracing/trace_uploader.h
@@ -43,12 +43,13 @@ class TraceUploader : public net::URLFetcherDelegate {
                 const std::string& version,
                 const std::string& upload_url,
                 net::URLRequestContextGetter* request_context);
-  virtual ~TraceUploader();
+  ~TraceUploader() 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;
 
   // Compresses and uploads the given file contents.
   void DoUpload(const std::string& file_contents,