Fix GN bootstrap

TBR=brettw

BUG=none

Review-Url: https://codereview.chromium.org/2903693002 .
Cr-Original-Commit-Position: refs/heads/master@{#474017}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 797723cd4453d536fdedb083918537630aa81b2b
1 file changed
tree: 445d5bea51eafaf894458f77a37a4b2f696d8699
  1. tools/