Merge "Merge "Lighten bubble scrim" into rvc-dev am: e3f751c4 am: bbf5c579" into rvc-d1-dev-plus-aosp am: 96216120 am: cba909a4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11924521

Change-Id: I15558fcd817ceda8221d752203fa4fc491e8520b