Convert tools/vim to python3

Bug: 1212119
Change-Id: I743f997826117526f6737e4d0398bed7dedf3d5b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2930878
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Dan H <harringtond@chromium.org>
Cr-Commit-Position: refs/heads/master@{#888238}
NOKEYCHECK=True
GitOrigin-RevId: dbdf14a371a85b22f047f8ac889d83f1661e757b
2 files changed