Remove DumpWithoutCrashing() from broker_process_dispatcher

There seems to be very few instances of these dumps on the crash server,
but if no one is looking at them, I'd like to remove calls to it.
DumpWithoutCrashing() can hide legitimate crashes due to crash
throttling.

R=yzshen@chromium.org
BUG=610600,694688

Review-Url: https://codereview.chromium.org/2717473003
Cr-Commit-Position: refs/heads/master@{#452871}
1 file changed