Allow muting/unmuting audio through media track API

media/test/pipeline_integration_test_base.h

 // 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.
 
 #ifndef MEDIA_TEST_PIPELINE_INTEGRATION_TEST_BASE_H_
 #define MEDIA_TEST_PIPELINE_INTEGRATION_TEST_BASE_H_
 
 #include <stdint.h>
 
 #include "base/md5.h"
@@ skipping 116 matching lines @@
   scoped_refptr<ClocklessAudioSink> clockless_audio_sink_;
   scoped_ptr<NullVideoSink> video_sink_;
   bool ended_;
   PipelineStatus pipeline_status_;
   Demuxer::EncryptedMediaInitDataCB encrypted_media_init_data_cb_;
   VideoPixelFormat last_video_frame_format_;
   ColorSpace last_video_frame_color_space_;
   DummyTickClock dummy_clock_;
   AudioHardwareConfig hardware_config_;
   PipelineMetadata metadata_;
+  unsigned track_id_ = 0;
 
   PipelineStatus StartInternal(scoped_ptr<DataSource> data_source,
                                CdmContext* cdm_context,
                                uint8_t test_type);
 
   PipelineStatus StartWithFile(const std::string& filename,
                                CdmContext* cdm_context,
                                uint8_t test_type);
 
   void OnSeeked(base::TimeDelta seek_time, PipelineStatus status);
@@ skipping 20 matching lines @@
   MOCK_METHOD1(DecryptorAttached, void(bool));
   MOCK_METHOD2(OnAddTextTrack,
                void(const TextTrackConfig& config,
                     const AddTextTrackDoneCB& done_cb));
   MOCK_METHOD0(OnWaitingForDecryptionKey, void(void));
 };
 
 }  // namespace media
 
 #endif  // MEDIA_TEST_PIPELINE_INTEGRATION_TEST_BASE_H_