Adds missing Lacros forward from AutomationEventRouter

R=katie@chromium.org

Change-Id: Ib945d6d6c15270de597a01ecb430fda543d6bf18
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4350611


Reviewed-by: Katie Dektar <katie@chromium.org>
Commit-Queue: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1118939}