Standardize usage of virtual/override/final specifiers.

media/audio/audio_input_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/environment.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
@@ skipping 36 matching lines @@
 class AudioInputTest : public testing::Test {
   public:
    AudioInputTest() :
       message_loop_(base::MessageLoop::TYPE_UI),
       audio_manager_(AudioManager::CreateForTesting()),
       audio_input_stream_(NULL) {
     // Wait for the AudioManager to finish any initialization on the audio loop.
     base::RunLoop().RunUntilIdle();
   }
 
-  virtual ~AudioInputTest() {
-    base::RunLoop().RunUntilIdle();
-  }
+  ~AudioInputTest() override { base::RunLoop().RunUntilIdle(); }
 
  protected:
   AudioManager* audio_manager() { return audio_manager_.get(); }
 
   bool CanRunAudioTests() {
     bool has_input = audio_manager()->HasAudioInputDevices();
     LOG_IF(WARNING, !has_input) << "No input devices detected";
     return has_input;
   }
 
@@ skipping 162 matching lines @@
       base::MessageLoop::QuitClosure(),
       base::TimeDelta::FromMilliseconds(500));
   message_loop_.Run();
   EXPECT_GE(test_callback.callback_count(), 2);
   EXPECT_FALSE(test_callback.had_error());
 
   StopAndCloseAudioInputStreamOnAudioThread();
 }
 
 }  // namespace media