Merge "Revert "Remove shadows from launcher icons."" into sc-dev am: 78edf554ae am: a36e5065a8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/libs/systemui/+/14626350

Change-Id: Iea435350419c4414cb8461e02ffdb4bea2959a9b
tree: 76b152837c3ce62a723e2ee530579d8d3835cbb3
  1. iconloaderlib/
  2. searchuilib/