Summary:
Don't fatal when trying to send a message to flipper that is too large.
Instead just continue to throw an exception, so the plugin will still be aware of the failure.
Reviewed By: cpojer, danielbuechele
Differential Revision: D17180334
fbshipit-source-id: 49c341a7cee579158be3878639083c6d19b3eaa3
6eb1531aae