When selecting the frame above the V8_Dcheck method (at the DCHECK
location), it helps enormously to immediately see the error message
generated by the DCHECK. This extends the dcheck_stop_handler to find
and print this message.

Drive-by: Speed up the handler by stopping after the first V8_Dcheck
frame.

R=mstarzinger@chromium.org

Bug: v8:8562
Change-Id: If3a8f3aaab6a0014006ccac7260f37d5d90363c5
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/1378170Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58238}