Add methods to AccessContextAuditService to query cookie and storage

records separately.

The method for querying storage records will be used when a user clears
SameSite=None cookies to identify which sites' storage is accessed in a
cross-site context so that it can also be cleared.

This will allow sites that set SameSite=None cookies but only use JS
storage in a first-party context to keep their storage on clients'
machines when they clear third-party data.

Bug: 987177
Change-Id: I5a169263844c1f44a7921f1009aea33c7193c4c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2727072


Reviewed-by: Martin Šrámek <msramek@chromium.org>
Reviewed-by: Theodore Olsauskas-Warren <sauski@google.com>
Commit-Queue: Dylan Cutler <dylancutler@google.com>
Cr-Commit-Position: refs/heads/master@{#859782}