Convert SerialIoHandler to use Mojo types.

device/serial/serial_device_enumerator_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_DEVICE_ENUMERATOR_WIN_H_
 #define DEVICE_SERIAL_SERIAL_DEVICE_ENUMERATOR_WIN_H_
 
 #include "device/serial/serial_device_enumerator.h"
 
 namespace device {
 
 // Discovers and enumerates serial devices available to the host.
 class SerialDeviceEnumeratorWin : public SerialDeviceEnumerator {
  public:
   SerialDeviceEnumeratorWin();
   virtual ~SerialDeviceEnumeratorWin();
 
   // Implementation for SerialDeviceEnumerator.
-  virtual mojo::Array<SerialDeviceInfoPtr> GetDevices() OVERRIDE;
+  virtual mojo::Array<serial::DeviceInfoPtr> GetDevices() OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SerialDeviceEnumeratorWin);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_SERIAL_SERIAL_DEVICE_ENUMERATOR_WIN_H_