tree 54523ccf3fc36a1b50410e2cb6e6d1f7230c40cf
parent dc0dbbd4a005f16624978b95817b33156acac526
author Jeff Brown <jeffbrown@google.com> 1333749061 -0700
committer Jeff Brown <jeffbrown@google.com> 1333749439 -0700

Add a unique input device descriptor.

The purpose of the input device descriptor is to make it possible
to associate persistent settings for each input device, such as the
keyboard layout.

The descriptor is a hash of the information we have about the
device, such as its vendor id, product id, unique id, name,
or location.

Bug: 6110399
Change-Id: Idb80f946819b3f0dbf4e661bb0a753dbc2b60981