Update build-tools to ab/3418418
am: 1285dab756

Change-Id: I0741aa655e8f9750f7ed87f26ca4ca4da4b584fc
tree: bd62da78b32d1608fce42260ec601a911108c754
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml