am 0eb7b697: Merge changes Ib63ab95a,I585b0610,Ia84da0b5 into honeycomb-mr1

* commit '0eb7b697b7c180660647b5cd0cd7dd067f6b6abb':
  UsbManager: Hide APIs not needed for USB host or accessory support.
  Remove MtpClient class from framework and public API
  UsbDevice: Move IO related methods to new UsbDeviceConnection class