Merge "Remove color extraction from popup arrow, add shadows." into sc-dev am: d95aa5a5d7 am: e530554941 am: f41a31c0b5

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

Change-Id: If94e302092ccd7e940ccaab4336f773e991ae7ae