crash-reporter: Send "error_type" field for crash-reporter errors

If the "error_type" field was set by crash_reporter (see benchan@'s
https://gerrit.chromium.org/gerrit/17166), then send it with the crash
report.  This currently only affects crashes with the
"crash_reporter-user-collection" error signature.

BUG=chromium-os:7871
TEST=Manually ran crash_sender

Change-Id: I34c5e055efb407d57a3f83b07e8d4fc0a6b8fac1
Reviewed-on: https://gerrit.chromium.org/gerrit/19641
Tested-by: Michael Krebs <mkrebs@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>
Commit-Ready: Michael Krebs <mkrebs@chromium.org>
1 file changed
tree: 2f39dff8d1d0975d842bb072f56b17bdf67c0ab2
  1. crash_reporter/