Standardize usage of virtual/override/final specifiers.

content/browser/media/capture/web_contents_audio_input_stream_unittest.cc

 // Copyright (c) 2013 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 "content/browser/media/capture/web_contents_audio_input_stream.h"
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 170 matching lines @@
         mock_tracker_(new MockWebContentsTracker()),
         mock_vais_(NULL),
         wcais_(NULL),
         destination_(NULL),
         current_render_process_id_(kRenderProcessId),
         current_render_frame_id_(kRenderFrameId),
         on_data_event_(false, false) {
     audio_thread_.Start();
   }
 
-  virtual ~WebContentsAudioInputStreamTest() {
+  ~WebContentsAudioInputStreamTest() override {
     audio_thread_.Stop();
     thread_bundle_.reset();
 
     DCHECK(!mock_vais_);
     DCHECK(!wcais_);
     EXPECT_FALSE(destination_);
     DCHECK(streams_.empty());
     DCHECK(sources_.empty());
   }
 
@@ skipping 297 matching lines @@
   WaitForData();
   RUN_ON_AUDIO_THREAD(RemoveOneInputInFIFOOrder);
   WaitForData();
   RUN_ON_AUDIO_THREAD(ChangeMirroringTarget);
   RUN_ON_AUDIO_THREAD(RemoveOneInputInFIFOOrder);
   RUN_ON_AUDIO_THREAD(Stop);
   RUN_ON_AUDIO_THREAD(Close);
 }
 
 }  // namespace content