Update clang-tools to ab/4801387
am: 263b7a75b5

Change-Id: I5f409e555f12cac3a74c477c945628dad80b2d28
tree: b56c01b0fedd9c787b9679d5833813b38b84e747
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml