Use vpython3 when calling clang-format-diff.py
Use vpython3 when calling clang-format-diff.py

R=bdcbd10822f2f5deecea3bf14d73e9025b1b8375@google.com

Change-Id: I4bee5d9e4d5857d359d9f0663a4fbeea1194f838
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3502623
Reviewed-by: Gavin Mak <bdcbd10822f2f5deecea3bf14d73e9025b1b8375@google.com>
Commit-Queue: Josip Sokcevic <4606aec58cba917397ff2e4738f995e4758694f8@google.com>

CoherentLabs/depot_tools,CoherentLabs/depot_tools