Stop media stream source when audio capture error occurs.

content/renderer/media/media_stream_audio_unittest.cc

 // Copyright 2016 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 <stdint.h>
 
 #include "base/atomicops.h"
+#include "base/message_loop/message_loop.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/thread_checker.h"
 #include "content/public/renderer/media_stream_audio_sink.h"
 #include "content/renderer/media/media_stream_audio_source.h"
 #include "content/renderer/media/media_stream_audio_track.h"
 #include "media/base/audio_bus.h"
 #include "media/base/audio_parameters.h"
@@ skipping 240 matching lines @@
     return static_cast<FakeMediaStreamAudioSource*>(
         MediaStreamAudioSource::From(blink_audio_source_));
   }
 
   MediaStreamAudioTrack* track() const {
     return MediaStreamAudioTrack::From(blink_audio_track_);
   }
 
   blink::WebMediaStreamSource blink_audio_source_;
   blink::WebMediaStreamTrack blink_audio_track_;
+
+  base::MessageLoop message_loop_;
 };
 
 // Tests that a simple source-->track-->sink connection and audio data flow
 // works.
 TEST_F(MediaStreamAudioTest, BasicUsage) {
   // Create the source, but it should not be started yet.
   ASSERT_FALSE(source());
   blink_audio_source_.setExtraData(new FakeMediaStreamAudioSource());
   ASSERT_TRUE(source());
   EXPECT_FALSE(source()->was_started());
@@ skipping 166 matching lines @@
   // enabled state of the second track and sink. They should still be disabled,
   // with silent audio being consumed at the sink.
   EXPECT_EQ(FakeMediaStreamAudioSink::WAS_DISABLED, sink.enable_state());
   EXPECT_TRUE(sink.is_audio_silent());
 
   MediaStreamAudioTrack::From(another_blink_track)->RemoveSink(&another_sink);
   track()->RemoveSink(&sink);
 }
 
 }  // namespace content