[PPAPI][MediaStream] Add browser tests for MediaStreamAudioTrack

ppapi/tests/test_media_stream_audio_track.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 PAPPI_TESTS_TEST_MEDIA_STREAM_VIDEO_TRACK_H_
-#define PAPPI_TESTS_TEST_MEDIA_STREAM_VIDEO_TRACK_H_
+#ifndef PAPPI_TESTS_TEST_MEDIA_STREAM_AUDIO_TRACK_H_
+#define PAPPI_TESTS_TEST_MEDIA_STREAM_AUDIO_TRACK_H_
 
 #include <string>
 
-#include "ppapi/cpp/media_stream_video_track.h"
+#include "ppapi/cpp/media_stream_audio_track.h"
 #include "ppapi/cpp/video_frame.h"
 #include "ppapi/tests/test_case.h"
 
-class TestMediaStreamVideoTrack : public TestCase {
+class TestMediaStreamAudioTrack : public TestCase {
  public:
-  explicit TestMediaStreamVideoTrack(TestingInstance* instance);
-  virtual ~TestMediaStreamVideoTrack();
+  explicit TestMediaStreamAudioTrack(TestingInstance* instance);
+  virtual ~TestMediaStreamAudioTrack();
 
  private:
   // TestCase implementation.
   virtual bool Init();
   virtual void RunTests(const std::string& filter);
 
   // Overrides.
   virtual void HandleMessage(const pp::Var& message_data);
 
   std::string TestCreate();
-  std::string TestGetFrame();
-  std::string TestConfigure();
+  std::string TestGetBuffer();
 
-  pp::MediaStreamVideoTrack video_track_;
+  pp::MediaStreamAudioTrack audio_track_;
 
   NestedEvent event_;
 };
 
-#endif  // PAPPI_TESTS_TEST_MEDIA_STREAM_VIDEO_TRACK_H_
+#endif  // PAPPI_TESTS_TEST_MEDIA_STREAM_AUDIO_TRACK_H_