Standardize usage of virtual/override/final specifiers.

media/cast/test/utility/tap_proxy.cc

 // Copyright 2014 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.
 
 #include <fcntl.h>
 #include <linux/if_tun.h>
 #include <linux/types.h>
 #include <math.h>
 #include <net/if.h>
 #include <netinet/in.h>
@@ skipping 23 matching lines @@
 namespace media {
 namespace cast {
 namespace test {
 
 const size_t kMaxPacketSize = 4096;
 
 class SendToFDPipe : public PacketPipe {
  public:
   explicit SendToFDPipe(int fd) : fd_(fd) {
   }
-  virtual void Send(scoped_ptr<Packet> packet) override {
+  void Send(scoped_ptr<Packet> packet) override {
     while (1) {
       int written = write(
           fd_,
           reinterpret_cast<char*>(&packet->front()),
           packet->size());
       if (written < 0) {
         if (errno == EINTR) continue;
         perror("write");
         exit(1);
       }
@@ skipping 23 matching lines @@
     scoped_ptr<PacketPipe> tmp(new SendToFDPipe(output_fd));
     if (packet_pipe_) {
       packet_pipe_->AppendToPipe(tmp.Pass());
     } else {
       packet_pipe_ = tmp.Pass();
     }
     packet_pipe_->InitOnIOThread(base::MessageLoopProxy::current(),
                                  &tick_clock_);
   }
 
-  virtual ~QueueManager() {
-  }
+  ~QueueManager() override {}
 
   // MessageLoopForIO::Watcher methods
-  virtual void OnFileCanReadWithoutBlocking(int fd) override {
+  void OnFileCanReadWithoutBlocking(int fd) override {
     scoped_ptr<Packet> packet(new Packet(kMaxPacketSize));
     int nread = read(input_fd_,
                      reinterpret_cast<char*>(&packet->front()),
                      kMaxPacketSize);
     if (nread < 0) {
       if (errno == EINTR) return;
       perror("read");
       exit(1);
     }
     if (nread == 0) return;
     packet->resize(nread);
     packet_pipe_->Send(packet.Pass());
   }
-  virtual void OnFileCanWriteWithoutBlocking(int fd) override {
-    NOTREACHED();
-  }
+  void OnFileCanWriteWithoutBlocking(int fd) override { NOTREACHED(); }
 
  private:
   int input_fd_;
   scoped_ptr<PacketPipe> packet_pipe_;
   base::MessageLoopForIO::FileDescriptorWatcher read_socket_watcher_;
   base::DefaultTickClock tick_clock_;
 };
 
 }  // namespace test
 }  // namespace cast
@@ skipping 46 matching lines @@
 };
 
 ByteCounter in_pipe_input_counter;
 ByteCounter in_pipe_output_counter;
 ByteCounter out_pipe_input_counter;
 ByteCounter out_pipe_output_counter;
 
 class ByteCounterPipe : public media::cast::test::PacketPipe {
  public:
   ByteCounterPipe(ByteCounter* counter) : counter_(counter) {}
-  virtual void Send(scoped_ptr<media::cast::Packet> packet)
-      override {
+  void Send(scoped_ptr<media::cast::Packet> packet) override {
     counter_->Increment(packet->size());
     pipe_->Send(packet.Pass());
   }
  private:
   ByteCounter* counter_;
 };
 
 void SetupByteCounters(scoped_ptr<media::cast::test::PacketPipe>* pipe,
                        ByteCounter* pipe_input_counter,
                        ByteCounter* pipe_output_counter) {
@@ skipping 122 matching lines @@
   int fd2 = tun_alloc(argv[2], IFF_TAP);
 
   base::MessageLoopForIO message_loop;
   last_printout = base::TimeTicks::Now();
   media::cast::test::QueueManager qm1(fd1, fd2, in_pipe.Pass());
   media::cast::test::QueueManager qm2(fd2, fd1, out_pipe.Pass());
   CheckByteCounters();
   printf("Press Ctrl-C when done.\n");
   message_loop.Run();
 }