Add clang-format preupload check. am: 485e6881e5 am: c7058721b4

Original change: https://android-review.googlesource.com/c/platform/art/+/2296597

Change-Id: I68608b04278b180d25a8e97f895933454030d75d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>