Standardize usage of virtual/override/final in components/

components/copresence/mediums/audio/audio_player_unittest.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 "components/copresence/mediums/audio/audio_player.h"
 
 #include "base/bind.h"
 #include "base/memory/weak_ptr.h"
 #include "components/copresence/public/copresence_constants.h"
 #include "components/copresence/test/audio_test_support.h"
@@ skipping 11 matching lines @@
   TestAudioOutputStream(int default_frame_count,
                         int max_frame_count,
                         GatherSamplesCallback gather_callback)
       : default_frame_count_(default_frame_count),
         max_frame_count_(max_frame_count),
         gather_callback_(gather_callback),
         callback_(NULL) {
     caller_loop_ = base::MessageLoop::current();
   }
 
-  virtual ~TestAudioOutputStream() {}
+  ~TestAudioOutputStream() override {}
 
-  virtual bool Open() override { return true; }
-  virtual void Start(AudioSourceCallback* callback) override {
+  bool Open() override { return true; }
+  void Start(AudioSourceCallback* callback) override {
     callback_ = callback;
     GatherPlayedSamples();
   }
-  virtual void Stop() override {}
-  virtual void SetVolume(double volume) override {}
-  virtual void GetVolume(double* volume) override {}
-  virtual void Close() override {}
+  void Stop() override {}
+  void SetVolume(double volume) override {}
+  void GetVolume(double* volume) override {}
+  void Close() override {}
 
  private:
   void GatherPlayedSamples() {
     int frames = 0, total_frames = 0;
     do {
       // Call back into the player to get samples that it wants us to play.
       scoped_ptr<media::AudioBus> dest =
           media::AudioBus::Create(1, default_frame_count_);
       frames = callback_->OnMoreData(dest.get(), 0);
       total_frames += frames;
@@ skipping 127 matching lines @@
 TEST_F(AudioPlayerTest, PlayingEndToEnd) {
   const int kNumSamples = kDefaultFrameCount * 10;
   CreatePlayer();
 
   PlayAndVerifySamples(CreateRandomAudioRefCounted(0x1337, 1, kNumSamples));
 
   DeletePlayer();
 }
 
 }  // namespace copresence