replace OVERRIDE and FINAL with override and final in net/

net/tools/quic/test_tools/packet_dropping_test_writer.cc

Index: net/tools/quic/test_tools/packet_dropping_test_writer.cc
diff --git a/net/tools/quic/test_tools/packet_dropping_test_writer.cc b/net/tools/quic/test_tools/packet_dropping_test_writer.cc
index c7202d6d577febaba9c507d3da7f85c6643e1a47..2571868a513c4916200ea619e4b057a03d707d1d 100644
--- a/net/tools/quic/test_tools/packet_dropping_test_writer.cc
+++ b/net/tools/quic/test_tools/packet_dropping_test_writer.cc
@@ -21,7 +21,7 @@ class WriteUnblockedAlarm : public QuicAlarm::Delegate {
   explicit WriteUnblockedAlarm(PacketDroppingTestWriter* writer)
       : writer_(writer) {}
 
-  virtual QuicTime OnAlarm() OVERRIDE {
+  virtual QuicTime OnAlarm() override {
     DVLOG(1) << "Unblocking socket.";
     writer_->OnCanWrite();
     return QuicTime::Zero();
@@ -37,7 +37,7 @@ class DelayAlarm : public QuicAlarm::Delegate {
  public:
   explicit DelayAlarm(PacketDroppingTestWriter* writer) : writer_(writer) {}
 
-  virtual QuicTime OnAlarm() OVERRIDE {
+  virtual QuicTime OnAlarm() override {
     return writer_->ReleaseOldPackets();
   }