commit 63da1c7cd5d3dbe2d7216381fb2c0b559b6635d2
author Rubin Xu <rubinxu@google.com> Wed Nov 13 15:25:42 2019 +0000
committer Rubin Xu <rubinxu@google.com> Thu Nov 14 13:32:19 2019 +0000
tree 9f2bca3f877a44a406a48f1fdf240af1c53a016f
parent 903cd4ceed6719143cdc32e037b482c75a647937

Force a garbage collection after lockscreen verification

This is to attempt erasing any lockscreen password remnants from memory,
which is a NIAP certification requirement.

Bug: 142861621
Test: reboot device, enter lockscreen password, then use pmdump to dump
process memory for SystemUi, verify password does not exist in the dump.

Merged-In: Ifbec81a64e4c592b566f5653bd93fd7326693ec7
Change-Id: Ifbec81a64e4c592b566f5653bd93fd7326693ec7
(cherry picked from commit 20aa6cd497a6677ce8c1f80142630624fa0b1c2f)