Automated IWYU fix for TaskRunner includes.

content/browser/renderer_host/media/audio_input_renderer_host_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 "content/browser/renderer_host/media/audio_input_renderer_host.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/browser/bad_message.h"
 #include "content/browser/media/capture/audio_mirroring_manager.h"
 #include "content/browser/renderer_host/media/audio_input_device_manager.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/renderer_host/media/media_stream_ui_proxy.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/mock_render_process_host.h"
 #include "content/public/test/test_browser_context.h"
@@ skipping 536 matching lines @@
   EXPECT_CALL(controller_factory_, ControllerCreated());
 
   airh_->OnMessageReceived(AudioInputHostMsg_CreateStream(
       kStreamId, kRenderFrameId, session_id, DefaultConfig()));
   base::RunLoop().RunUntilIdle();
 
   EXPECT_CALL(*controller_factory_.controller(0), Close(_));
 }
 
 }  // namespace content