Standardize usage of virtual/override/final specifiers.

media/audio/audio_input_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/message_loop/message_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/test_timeouts.h"
 #include "media/audio/audio_input_controller.h"
@@ skipping 49 matching lines @@
                     const std::string& message));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockAudioInputControllerEventHandler);
 };
 
 // Test fixture.
 class AudioInputControllerTest : public testing::Test {
  public:
   AudioInputControllerTest() {}
-  virtual ~AudioInputControllerTest() {}
+  ~AudioInputControllerTest() override {}
 
  protected:
   base::MessageLoop message_loop_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioInputControllerTest);
 };
 
 // Test AudioInputController for create and close without recording audio.
 TEST_F(AudioInputControllerTest, CreateAndClose) {
@@ skipping 174 matching lines @@
   controller->Record();
 
   controller->Close(base::MessageLoop::QuitClosure());
   base::MessageLoop::current()->Run();
 
   controller->Close(base::MessageLoop::QuitClosure());
   base::MessageLoop::current()->Run();
 }
 
 }  // namespace media