Update clang-tools to ab/4830074
am: d6d68a1890

Change-Id: If2e70b5de4c764ccef492e94725e2bb36a5f8f74
tree: 90162ab1673789ac695a1ca5177445925177bfd4
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml