Hide usb mode chooser dialog after disconnected

Add a UsbDisconnectedReceiver to listen usb state event, and hide
the usb mode chooser dialog if usb disconnected.

Change-Id: I871f56cb5a310e20950926180d9747dd9fad9754
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Zhiquan Liu <zhiquan.liu@intel.com>
1 file changed