Remove unused include in sequenced_worker_pool.h

remoting/protocol/ice_connection_to_host.h

 // Copyright 2015 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.
 
 #ifndef REMOTING_PROTOCOL_ICE_CONNECTION_TO_HOST_H_
 #define REMOTING_PROTOCOL_ICE_CONNECTION_TO_HOST_H_
 
 #include <memory>
 #include <set>
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
 #include "base/threading/non_thread_safe.h"
 #include "remoting/proto/internal.pb.h"
 #include "remoting/protocol/channel_dispatcher_base.h"
 #include "remoting/protocol/clipboard_filter.h"
 #include "remoting/protocol/connection_to_host.h"
 #include "remoting/protocol/errors.h"
 #include "remoting/protocol/ice_transport.h"
 #include "remoting/protocol/input_filter.h"
 #include "remoting/protocol/monitored_video_stub.h"
 #include "remoting/protocol/session.h"
@@ skipping 81 matching lines @@
   ErrorCode error_ = OK;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(IceConnectionToHost);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_ICE_CONNECTION_TO_HOST_H_