[CQ] Update proto format to fix triggered builders.

Depends on https://chromereviews.googleplex.com/319777013/

BUG=chromium:561530
LOG=n
TBR=sergiyb@chromium.org, tandrii@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1486963002

Cr-Commit-Position: refs/heads/master@{#32453}

infra/config/cq.cfg

@@ -41,6 +41,10 @@ verifiers {
       builders { name: "v8_mac_rel" }
       builders { name: "v8_presubmit" }
       builders { name: "v8_win64_rel_ng" }
+      builders {
+        name: "v8_win64_rel_ng_triggered"
+        triggered_by: "v8_win64_rel_ng"
+      }
       builders { name: "v8_win_compile_dbg" }
       builders { name: "v8_win_nosnap_shared_compile_rel" }
       builders { name: "v8_win_rel" }