Add more information to DumpWithoutCrashing

We're seen some crashes where the stack generated by a
DumpWithoutCrashing is corrupted. Record the location in a crash
key so that we can debug these corrupted crashes.

BUG=b:324771555

Change-Id: Ia8c5a4d0b31654c72f83202888c218d19a61ddaf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5336524


Reviewed-by: Peter Boström <pbos@chromium.org>
Commit-Queue: Ian Barkley-Yeung <iby@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1270494}