[automerger skipped] Update clang-tools to ab/6319416 am: 7e2cfe9cd1 am: de3db31086 am: 69c91141e9 am: bf1794eaa4 -s ours

am skip reason: Change-Id Idbefc839be1f67ad8a5b759914ce57134b496636 with SHA-1 7e2cfe9cd1 is in history

Change-Id: I990634bbb297889e8dd475af4c4d8e77296c541a
tree: 1e68c86d94496efad54c59e1407fd110777cab26
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml