switch autoninja shebang to python3
We don't want to use python2 and this doesn't use third party library
too so no need to be vpython which has a small overhead.
Change-Id: Iff924a87f0562069e29195a5693e2260e4a6684e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3400397
Auto-Submit: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
diff --git a/autoninja.py b/autoninja.py
index c468905..4be1083 100755
--- a/autoninja.py
+++ b/autoninja.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env vpython
+#!/usr/bin/env python3
# Copyright (c) 2017 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.