Update build-tools to ab/4534650
am: 2212d17cf2

Change-Id: I52c37e033f7cdb8c7211b984d7aebd8454fdc150
tree: 0b47405491526ef796153b715f2d0a054694ffa7
  1. common/
  2. darwin-x86/
  3. linux-x86/
  4. build-prebuilts.sh
  5. manifest.xml
  6. OWNERS