Fixes for Win toolchain isolate

infra/bots/bootstrap_win_toolchain_json.py

+#!/usr/bin/env python
+#
+# Copyright 2016 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+
+"""Resolve the path placeholders in the win_toolchain.json file."""
+
+
+import argparse
+import win_toolchain_utils
+
+
+def main():
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--win_toolchain_json', required=True)
+  parser.add_argument('--depot_tools_parent_dir', required=True)
+  args = parser.parse_args()
+  win_toolchain_utils.resolve(args.win_toolchain_json,
+                              args.depot_tools_parent_dir)
+
+
+if __name__ == '__main__':
+  main()