Fix gn get_label_info comment

Review-Url: https://codereview.chromium.org/2929893002
Cr-Original-Commit-Position: refs/heads/master@{#478042}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f8bf5083fb27aa1b7c5786854f62da9b5b5532f3
1 file changed
tree: a0c55d9a7c4a6bc033c5bb3afbba17bbd86c0c47
  1. tools/