Merge "Merge "System Bars: API to ensure contrast when app requested...
Merge "Merge "System Bars: API to ensure contrast when app requested transparent bar" into qt-dev am: 76d2f52e" into qt-dev-plus-aosp
am: 4c390b62
Change-Id: I60e723d8eb91f7e77467157834b43abb8fb6df52