Daichi Hirono 9678f60633 Add MtpDatabase class.
The class stores document information and will be used to remap object
handle with document ID when the process resumes.

BUG=25162822
Change-Id: Ic1a2f60ae0ee90b6c2b77a89a578cef1e0e917f2
2015-10-26 10:41:03 +09:00
..
2015-10-26 10:41:03 +09:00
2015-07-28 14:30:07 +09:00