Summary:
Before this diff the notification fired for crash reporter had the entire callstack as its message, which is actually not required and it also makes a UI not good.
This diff just limits the message length
BUG:
{F154537911}
Reviewed By: passy
Differential Revision: D14594189
fbshipit-source-id: 663710e3e80be4367d0cc2a532fd4aa312cc0c1e
