Add location information in heap snapshot for objects where the
constructor can be determined.

Bug: chromium:854097
Change-Id: Ieb2ab70a65809ecc9dfa0d73a33fa57add430465
Reviewed-on: https://chromium-review.googlesource.com/1179156
Commit-Queue: Dominik Inführ <dinfuehr@google.com>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55387}