[M152] [AW] Return null fingerprint if pseudo-partitioned link is not valid

Original change's description:
> [AW] Return null fingerprint if pseudo-partitioned link is not valid
>
> The partitioned database does not allow for creation of fingerprints
> when the top level site or the frame origin are opaque. In
> pseudo-partitioning, we simply cast the canonical_url into the top level
> site and frame origin. If the canonical_url is an error page, then the
> resulting created top level site will be opaque.
>
> This change returns a null fingerprint if the pseudo-partitioned link is
> not valid (which would have opaque parts) and therefore does not mark
> them as visited. This is a departure from the existing behavior of
> WebView visited links (kWebViewMigrateVisitedLinks disabled), which
> currently marks links such as about:blank as visited. However, there is existing logic (https://source.chromium.org/chromium/chromium/src/+/main:components/visitedlink/browser/visitedlink_writer.cc;l=326;drc=e7bc4320b65c2dca649bfdd0448a68ce1eb5823a) that supports the fact that invalid urls should not be saved to history.
>
> Change-Id: Ia80cad1fdbadad74dbbc73b784ad68b148320d54
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8186305
> Reviewed-by: Richard Coles <torne@chromium.org>
> Reviewed-by: Kyra Seevers <kyraseevers@chromium.org>
> Commit-Queue: Tiffany Song <tiffanysong@google.com>
> Cr-Commit-Position: refs/heads/main@{#1675786}

(cherry picked from commit a343a2822dcb98345ef4c03c607ab2d615823208)

Bug: 544674093
Change-Id: Ia80cad1fdbadad74dbbc73b784ad68b148320d54
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8225852
Commit-Queue: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: chrome-cherry-picker@chops-service-accounts.iam.gserviceaccount.com <chrome-cherry-picker@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/7977@{#1123}
Cr-Branched-From: b7fe14017379ddffae396d944fb8b59a5896c261-refs/heads/main@{#1669021}