Add result code for JSON parser sandbox disconnect

Similar to the engine sandbox and Chrome prompt IPCs, this result code
indicates the sandbox connection was closed while it was still needed.

Bug: b/111108241
Change-Id: I8b231c5921e51b57932ce8d5054f9dd0484be46f
Reviewed-on: https://chromium-review.googlesource.com/1154995
Reviewed-by: proberge <proberge@chromium.org>
Reviewed-by: Joe Mason <joenotcharles@chromium.org>
Commit-Queue: Nick Burris <nburris@google.com>
Cr-Commit-Position: refs/heads/master@{#579163}
1 file changed