Ensures that audio tasks cannot run after AudioManager is deleted.

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 86 matching lines @@
     "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_system.cc",
     "audio_system.h",
     "audio_system_impl.cc",
     "audio_system_impl.h",
+    "audio_thread.h",
+    "audio_thread_impl.cc",
+    "audio_thread_impl.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 175 matching lines @@
     "audio_device_info_accessor_for_tests.cc",
     "audio_device_info_accessor_for_tests.h",
     "audio_unittest_util.cc",
     "audio_unittest_util.h",
     "mock_audio_manager.cc",
     "mock_audio_manager.h",
     "mock_audio_source_callback.cc",
     "mock_audio_source_callback.h",
     "test_audio_input_controller_factory.cc",
     "test_audio_input_controller_factory.h",
+    "test_audio_thread.cc",
+    "test_audio_thread.h",
   ]
-  configs += [ ":platform_config" ]
+  configs += [
+    ":platform_config",
+    "//media:media_config",
+  ]
   deps = [
     "//base",
     "//media",
     "//testing/gmock",
     "//testing/gtest",
   ]
-  configs += [ "//media:media_config" ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "audio_debug_file_writer_unittest.cc",
     "audio_debug_recording_helper_unittest.cc",
     "audio_debug_recording_manager_unittest.cc",
     "audio_input_controller_unittest.cc",
     "audio_input_device_unittest.cc",
@@ skipping 70 matching lines @@
     ]
   }
 
   if (use_alsa) {
     sources += [
       "alsa/alsa_output_unittest.cc",
       "audio_low_latency_input_output_unittest.cc",
     ]
   }
 }