UNREACHABLE and CHECK call V8_Fatal directly so treat them like
V8_Dcheck, but also ensure that the frame is moved up to the DCHECK
frame even if it calls V8_Fatal.

Change-Id: Iad5f2e3ea95182bed473d6b2d843a0c1e111911d
Reviewed-on: https://chromium-review.googlesource.com/1183303Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55267}