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This adds a histogram to log, for SameParty cookies, whether the
attribute was applied correctly (i.e. whether the cookie both had Secure
and did not have SameSite=Strict).

Bug: 1142606
Change-Id: I512f0dd83896d917022ece0da2e85ac6f0d7392c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2510195Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Maksim Orlovich <morlovich@chromium.org>
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Commit-Queue: Lily Chen <chlily@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824009}