Implement permission_broker for serial devices.

device/serial/serial_io_handler_win.h

 // 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.
 
 #ifndef DEVICE_SERIAL_SERIAL_IO_HANDLER_WIN_H_
 #define DEVICE_SERIAL_SERIAL_IO_HANDLER_WIN_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "device/serial/serial_io_handler.h"
@@ skipping 13 matching lines @@
   virtual bool SetControlSignals(
       const serial::HostControlSignals& control_signals) override;
   virtual bool ConfigurePort(const serial::ConnectionOptions& options) override;
   virtual serial::ConnectionInfoPtr GetPortInfo() const override;
   virtual bool PostOpen() override;
 
  private:
   friend class SerialIoHandler;
 
   explicit SerialIoHandlerWin(
-      scoped_refptr<base::MessageLoopProxy> file_thread_message_loop);
+      scoped_refptr<base::MessageLoopProxy> file_thread_message_loop,
+      scoped_refptr<base::MessageLoopProxy> ui_thread_message_loop);
   virtual ~SerialIoHandlerWin();
 
   // base::MessageLoopForIO::IOHandler implementation.
   virtual void OnIOCompleted(base::MessageLoopForIO::IOContext* context,
                              DWORD bytes_transfered,
                              DWORD error) override;
 
   // Context used for asynchronous WaitCommEvent calls.
   scoped_ptr<base::MessageLoopForIO::IOContext> comm_context_;
 
@@ skipping 10 matching lines @@
   // WaitCommEvent, as opposed to waiting on actual ReadFile completion
   // after a corresponding WaitCommEvent has completed.
   bool is_comm_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(SerialIoHandlerWin);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_SERIAL_SERIAL_IO_HANDLER_WIN_H_