Use autoninja instead of ninja in ninja-build.vim.

Change-Id: Ia17c5adbf2c4336183165b33e48ca27795e848d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1565269
Reviewed-by: Scott Graham <scottmg@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Auto-Submit: Daniel Cheng <dcheng@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#650358}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 9d5e74baee6a97182846b2b61400ad043cf20aea
2 files changed