Use MotionEvent.getEventTime() instead of SystemClock.uptimeMillis()

This should be perfectly safe since this value is only used for reporting the timestamp to ActivityOptions.SourceInfo, and getEventTime is a timestamp in the uptime clock base.

Change-Id: Ie6d55f85dba083834e76edd826c5eca52fda1cf0
Fixes: 265053878
Test: treehugger
1 file changed