Merge "Remove color extraction from popup arrow, add shadows." into sc-dev am: d95aa5a5d7 am: b3836071d1

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14471367

Change-Id: I9e4934a99f4031fd520e8b5f2f6c0f645fa67bc5