tree 0c07ec4ea5a4db8548988e4df60b23b0d6fa8cd9
parent 34824129de2c4a8bb0d1cb9011beff2c186a87d0
author Jeff Sharkey <jsharkey@android.com> 1433954521 -0700
committer Jeff Sharkey <jsharkey@android.com> 1433954521 -0700

Start tracking added users with serial numbers.

vold will eventually use the serial numbers to clean up stale user
directories when mounting private storage devices.

Bug: 20275572
Change-Id: Ia29cb5da23e969f3087bb5caa5dc8f4e88f07613