Standardize usage of virtual/override/final specifiers.

media/audio/audio_output_controller_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/environment.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 81 matching lines @@
 class AudioOutputControllerTest : public testing::Test {
  public:
   AudioOutputControllerTest()
       : audio_manager_(AudioManager::CreateForTesting()),
         create_event_(false, false),
         play_event_(false, false),
         read_event_(false, false),
         pause_event_(false, false) {
   }
 
-  virtual ~AudioOutputControllerTest() {
-  }
+  ~AudioOutputControllerTest() override {}
 
  protected:
   void Create(int samples_per_packet) {
     EXPECT_FALSE(create_event_.IsSignaled());
     EXPECT_FALSE(play_event_.IsSignaled());
     EXPECT_FALSE(read_event_.IsSignaled());
     EXPECT_FALSE(pause_event_.IsSignaled());
 
     params_ = AudioParameters(
         AudioParameters::AUDIO_FAKE, kChannelLayout,
@@ skipping 291 matching lines @@
 
 TEST_F(AudioOutputControllerTest, DivertRevertClose) {
   Create(kSamplesPerPacket);
   WaitForCreate();
   DivertNeverPlaying();
   RevertWasNotPlaying();
   Close();
 }
 
 }  // namespace media