Automated IWYU fix for TaskRunner includes.

remoting/signaling/delegating_signal_strategy.cc

 // Copyright 2013 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 "remoting/signaling/delegating_signal_strategy.h"
 
 #include "base/bind.h"
 #include "base/rand_util.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "third_party/libjingle_xmpp/xmllite/xmlelement.h"
 #include "third_party/libjingle_xmpp/xmpp/constants.h"
 
 namespace remoting {
 
 DelegatingSignalStrategy::DelegatingSignalStrategy(
     const SignalingAddress& local_address,
     scoped_refptr<base::SingleThreadTaskRunner> client_task_runner,
@@ skipping 86 matching lines @@
   delegate_task_runner_->PostTask(FROM_HERE,
                                   base::Bind(send_iq_callback_, stanza->Str()));
   return true;
 }
 
 std::string DelegatingSignalStrategy::GetNextId() {
   return base::Uint64ToString(base::RandUint64());
 }
 
 }  // namespace remoting