Removing file_thread_task_runner parameter from SerialIoHandler

tools/battor_agent/battor_connection_impl_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 "tools/battor_agent/battor_connection_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 10 matching lines @@
 void NullReadCallback(int, device::serial::ReceiveError) {}
 
 }  // namespace
 
 namespace battor {
 
 // TestableBattOrConnection uses a fake serial connection be testable.
 class TestableBattOrConnection : public BattOrConnectionImpl {
  public:
   TestableBattOrConnection(BattOrConnection::Listener* listener)
-      : BattOrConnectionImpl("/dev/test", listener, nullptr, nullptr) {}
+      : BattOrConnectionImpl("/dev/test", listener, nullptr) {}
   scoped_refptr<device::SerialIoHandler> CreateIoHandler() override {
     return device::TestSerialIoHandler::Create();
   }
 
   scoped_refptr<device::SerialIoHandler> GetIoHandler() { return io_handler_; }
 };
 
 // BattOrConnectionImplTest provides a BattOrConnection and captures the
 // results of all its commands.
 class BattOrConnectionImplTest : public testing::Test,
@@ skipping 348 matching lines @@
       BATTOR_CONTROL_BYTE_END,
   };
   SendBytesRaw(data, 3);
   ReadMessage(BATTOR_MESSAGE_TYPE_PRINT);
 
   ASSERT_TRUE(IsReadComplete());
   ASSERT_FALSE(GetReadSuccess());
 }
 
 }  // namespace battor