Update clang-tools to ab/6166214
am: f88257a0d9

Change-Id: I86b222051439008c398828b84ace5ec51f6e2f09
tree: 4bb315e8c427fe425107be78bfc154e6fdfbc6ba
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml