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

chrome/browser/media/webrtc_rtp_dump_handler_unittest.cc

Index: chrome/browser/media/webrtc_rtp_dump_handler_unittest.cc
diff --git a/chrome/browser/media/webrtc_rtp_dump_handler_unittest.cc b/chrome/browser/media/webrtc_rtp_dump_handler_unittest.cc
index 78ad5bee007fb5d13caaa7883e9fe30eba97ffa6..eed30b5b9d954d7b74731dedbe134aaa5a7e006b 100644
--- a/chrome/browser/media/webrtc_rtp_dump_handler_unittest.cc
+++ b/chrome/browser/media/webrtc_rtp_dump_handler_unittest.cc
@@ -28,17 +28,17 @@ class FakeDumpWriter : public WebRtcRtpDumpWriter {
         max_size_reached_callback_(max_size_reached_callback),
         end_dump_success_(end_dump_success) {}
 
-  virtual void WriteRtpPacket(const uint8* packet_header,
-                              size_t header_length,
-                              size_t packet_length,
-                              bool incoming) override {
+  void WriteRtpPacket(const uint8* packet_header,
+                      size_t header_length,
+                      size_t packet_length,
+                      bool incoming) override {
     current_dump_size_ += header_length;
     if (current_dump_size_ > max_dump_size_)
       max_size_reached_callback_.Run();
   }
 
-  virtual void EndDump(RtpDumpType type,
-                       const EndDumpCallback& finished_callback) override {
+  void EndDump(RtpDumpType type,
+               const EndDumpCallback& finished_callback) override {
     bool incoming_sucess = end_dump_success_;
     bool outgoing_success = end_dump_success_;