Removing file_thread_task_runner parameter from SerialIoHandler

device/serial/test_serial_io_handler.cc

 // 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.
 
 #include "device/serial/test_serial_io_handler.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "device/serial/serial.mojom.h"
 
 namespace device {
 
 TestSerialIoHandler::TestSerialIoHandler()
-    : SerialIoHandler(NULL, NULL),
+    : SerialIoHandler(NULL),
       opened_(false),
       dtr_(false),
       rts_(false),
-      flushes_(0) {
-}
+      flushes_(0) {}
 
 scoped_refptr<SerialIoHandler> TestSerialIoHandler::Create() {
   return scoped_refptr<SerialIoHandler>(new TestSerialIoHandler);
 }
 
 void TestSerialIoHandler::Open(const std::string& port,
                                const serial::ConnectionOptions& options,
                                const OpenCompleteCallback& callback) {
   DCHECK(!opened_);
   opened_ = true;
@@ skipping 75 matching lines @@
 }
 
 bool TestSerialIoHandler::ClearBreak() {
   return true;
 }
 
 TestSerialIoHandler::~TestSerialIoHandler() {
 }
 
 }  // namespace device