Fix GN bootstrap for MacOS X

TBR=Dirk Pranke <dpranke@chromium.org>

Bug: none
Change-Id: If3ca236785e54346ad4ae388193dcaa543b9d815
Reviewed-on: https://chromium-review.googlesource.com/649586
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#500024}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 95ce69ba66bd4f773d745bef76eeb684f43410d8
1 file changed
tree: f05ad3c38ca7c6d8b4caabcd9cc3abd64362a456
  1. tools/