Skip updating exclusion rects unless one is set

Bug: 140775753
Bug: 140701977
Bug: 140758369
Test: atest google/perf/jank/SystemUI/UbSystemUIJankTests:android.platform.systemui.tests.jank.SystemUiJankTests#testQuickSettingsPull -v
Change-Id: I824ca918d141eb88aa99b1e90adafe64ca3eb672
1 file changed