tree a3709538462cb1ae7323ed8b7e05e47bb8565cd9
parent 3463d1c5f9e9b5b5014a5326fbbc812a834aadb8
author Pinyao Ting <pinyaoting@google.com> 1568414148 -0700
committer Pinyao Ting <pinyaoting@google.com> 1568668909 -0700

support scroll backward to minus one screen via voice/switch access

Bug: 140406263
Test: Manual
Change-Id: I604b12f8ba8706cbabc28acafd6c151166832f22