Pass task runners to AudioManager constructor.

media/audio/BUILD.gn

 # 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.
 
 import("//build/config/linux/pkg_config.gni")
 import("//media/media_options.gni")
 
 # When libpulse is not directly linked, use stubs to allow for dlopening of the
 # binary.
 if (!link_pulseaudio) {
@@ skipping 72 matching lines @@
     "audio_output_proxy.h",
     "audio_output_resampler.cc",
     "audio_output_resampler.h",
     "audio_output_stream_sink.cc",
     "audio_output_stream_sink.h",
     "audio_power_monitor.cc",
     "audio_power_monitor.h",
     "audio_source_diverter.h",
     "audio_streams_tracker.cc",
     "audio_streams_tracker.h",
+    "audio_thread.cc",
+    "audio_thread.h",
     "clockless_audio_sink.cc",
     "clockless_audio_sink.h",
     "fake_audio_input_stream.cc",
     "fake_audio_input_stream.h",
     "fake_audio_log_factory.cc",
     "fake_audio_log_factory.h",
     "fake_audio_manager.cc",
     "fake_audio_manager.h",
     "fake_audio_output_stream.cc",
     "fake_audio_output_stream.h",
@@ skipping 248 matching lines @@
     ]
   }
 
   if (use_alsa) {
     sources += [
       "alsa/alsa_output_unittest.cc",
       "audio_low_latency_input_output_unittest.cc",
     ]
   }
 }