Fix GN bootstrap.

Added missing files.

BUG=none
R=jochen@chromium.org, thakis@chromium.org

Review-Url: https://codereview.chromium.org/2747483002
Cr-Original-Commit-Position: refs/heads/master@{#456229}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 379e35f6f3eaa41a97f2659249509ca599749b27
1 file changed
tree: 4b85a1e0875ca3cac31c1c4bf2d4d914ec0c3eab
  1. tools/