Automated IWYU fix for TaskRunner includes.

media/remoting/demuxer_stream_adapter.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 "media/remoting/demuxer_stream_adapter.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
+#include "base/single_thread_task_runner.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/timestamp_constants.h"
 #include "media/remoting/proto_enum_utils.h"
 #include "media/remoting/proto_utils.h"
 
 // Convenience logging macro used throughout this file.
 #define DEMUXER_VLOG(level) VLOG(level) << __func__ << "[" << name_ << "]: "
 
 namespace media {
@@ skipping 411 matching lines @@
   if (write_watcher_.IsWatching()) {
     DEMUXER_VLOG(2) << "Cancel mojo data pipe watcher";
     write_watcher_.Cancel();
   }
 
   base::ResetAndReturn(&error_callback_).Run(stop_trigger);
 }
 
 }  // namespace remoting
 }  // namespace media