Standardize usage of virtual/override/final in media/

media/cast/sender/video_sender_unittest.cc

Index: media/cast/sender/video_sender_unittest.cc
diff --git a/media/cast/sender/video_sender_unittest.cc b/media/cast/sender/video_sender_unittest.cc
index 29cbfb4ba816e47d6766fafbe9615c61bb24e1a7..2276e332b0a4511572404db97a47a5ee4a717df1 100644
--- a/media/cast/sender/video_sender_unittest.cc
+++ b/media/cast/sender/video_sender_unittest.cc
@@ -64,8 +64,7 @@ class TestPacketSender : public PacketSender {
         paused_(false) {}
 
   // A singular packet implies a RTCP packet.
-  virtual bool SendPacket(PacketRef packet,
-                          const base::Closure& cb) override {
+  bool SendPacket(PacketRef packet, const base::Closure& cb) override {
     if (paused_) {
       stored_packet_ = packet;
       callback_ = cb;
@@ -85,9 +84,7 @@ class TestPacketSender : public PacketSender {
     return true;
   }
 
-  virtual int64 GetBytesSent() override {
-    return 0;
-  }
+  int64 GetBytesSent() override { return 0; }
 
   int number_of_rtp_packets() const { return number_of_rtp_packets_; }