tree fed04e3f4a59fcc2c7147148512a799facf4dd2a
parent be8a01417527b8b39ca257dd8955716e973e6a59
author Phil Weaver <pweaver@google.com> 1513796053 -0800
committer Phil Weaver <pweaver@google.com> 1513818263 -0800

Fix accessibility reporting for lock screen PIN

Now reporting what is shown on the screen and generating
events when that changes as dots replace the numbers.

Bug: 69454936
Test: Manually observing the event stream as I enter a PIN
on the lock screen.

Change-Id: I4c0afe1140006192b57febb500ea982976645652