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On Lacros, when a browser is deleted and a new one is created, the
pointer to the new browser can be the same as the old one and this could
result in flaky failures.

Pointer inequality check is restricted to non-lacros and and a check
is added for the old and new browser profile paths.

Bug: 1130131
Change-Id: Ibf7004b126587f2341623d69c7c25775fb460018
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2442530
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815504}