question: @ TargetApi ( Build . VERSION_CODES . LOLLIPOP ) private static boolean moveToFront ( AppTask task ) { try { task . moveToFront ( ) ; return true ; } catch ( SecurityException e ) { sMoveToFrontExceptionHistogram . recordHit ( ) ; } return false ; }
target:  Attempt to move a task back to the front.  This can FAIL for some reason because the UID of the DocumentActivity we try to bring back to the front doesn't match the ChromeLauncherActivities.