Attempt to fix race in GN auto-roller again.

My previous fix was just wrong and was not correctly checking
whether we had received results from all 3 bots.

R=brettw@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1363703003

Cr-Original-Commit-Position: refs/heads/master@{#350271}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 6f3d71bf3add5c3844dcf886667d54becbe75712
1 file changed
tree: eeae1012907092fd159feef0a5d36d5a80830740
  1. tools/