[automerger skipped] Update clang-tools to ab/6339306 am: bca5d20b3a am: 3ae68b3cc3 am: fe0a2e9f1b am: 181732f880 -s ours

am skip reason: Change-Id I9eca1155589a5d532af7f198b823e297dff71786 with SHA-1 bca5d20b3a is in history

Change-Id: I3c3515b6aa4af13e28971831ff1da4439cb49baa