Set brightness threshold for high brightness

Set 60Hz as default refresh rate in the blocking zone of
the high brightness.

Bug: 166581675
Test: no fps transition in the blocking zone
Change-Id: Ib793bcc69f61452edb21b1bc957be255e50581d2
Merged-In: Ib793bcc69f61452edb21b1bc957be255e50581d2
1 file changed