Cleaning up some tests

components/copresence/test/audio_test_support.h

 // 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.
 
-#ifndef COMPONENTS_COPRESENCE_TEST_AUDIO_TEST_SUPPORT_
-#define COMPONENTS_COPRESENCE_TEST_AUDIO_TEST_SUPPORT_
+#ifndef COMPONENTS_COPRESENCE_TEST_AUDIO_TEST_SUPPORT_H_
+#define COMPONENTS_COPRESENCE_TEST_AUDIO_TEST_SUPPORT_H_
 
 #include <cstddef>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace media {
 class AudioBus;
 class AudioBusRefCounted;
 }
 
 namespace copresence {
 
 // Populate random samples given a random seed into the samples array.
 void PopulateSamples(int random_seed, size_t size, float* samples);
 
-// Create an audio bus populated with random samples.
-scoped_ptr<media::AudioBus> CreateRandomAudio(int random_seed,
-                                              int channels,
-                                              int samples);
-
 // Create an ref counted audio bus populated with random samples.
 scoped_refptr<media::AudioBusRefCounted>
     CreateRandomAudioRefCounted(int random_seed, int channels, int samples);
 
 }  // namespace copresence
 
-#endif  // COMPONENTS_COPRESENCE_TEST_AUDIO_TEST_SUPPORT_
+#endif  // COMPONENTS_COPRESENCE_TEST_AUDIO_TEST_SUPPORT_H_