Removing file_thread_task_runner parameter from SerialIoHandler

device/serial/serial_io_handler_posix_unittest.cc

 // 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.
 
 #include "base/macros.h"
 #include "device/serial/serial_io_handler_posix.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace device {
 
 class SerialIoHandlerPosixTest : public testing::Test {
  public:
   SerialIoHandlerPosixTest() {}
 
   void SetUp() override {
-    serial_io_handler_posix_ = new SerialIoHandlerPosix(nullptr, nullptr);
+    serial_io_handler_posix_ = new SerialIoHandlerPosix(nullptr);
   }
 
   void Initialize(bool parity_check_enabled,
                   const char* chars_stashed,
                   int num_chars_stashed) {
     serial_io_handler_posix_->error_detect_state_ = ErrorDetectState::NO_ERROR;
     serial_io_handler_posix_->parity_check_enabled_ = parity_check_enabled;
     serial_io_handler_posix_->num_chars_stashed_ = num_chars_stashed;
     for (int i = 0; i < num_chars_stashed; ++i) {
       serial_io_handler_posix_->chars_stashed_[i] = chars_stashed[i];
@@ skipping 985 matching lines @@
                "\377\0", 2, "\377", 1, false, false);
 
     char buffer_3[30] = {'a', 'd', 'e'};
     bytes_read = 3;
     TestHelper(buffer_3, buffer_len, bytes_read, ErrorDetectState::NO_ERROR, "",
                0, "de", 2, false, true);
   }
 }
 
 }  // namespace device