Update build-tools to ab/3380914
am: 84943c0a72

Change-Id: I73c13df1c7430d3bdef6ba124aac089fc22607bc
tree: 4acb9a6c2d439029416e187df7fb5286ac3c8a86
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml