Update build-tools to ab/4222283
am: 9c9ad2007a

Change-Id: I6db156ddafb455cbe59d514ea3886b30292487fc
tree: 684db3efdb3fdb5fd94faa22fe9ee6d52b486cac
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml
  5. OWNERS