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The raw sim-hash values are needed by the server to calculate the
sorting-lsh cutting points and/or blocklist. We should always log it
regardless of the final result after applying the blocklist or (the
upcoming) sorting-lsh.

Removed the NotifyFlocUpdated method, as we no longer need to notify
floc update event (which could be useful for the header. we can add it
back later if we want the header).

Bug: 1062736
Change-Id: I50bba6a1f1945c7b1c57dfc01724c8375da89d2b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2438483
Commit-Queue: Yao Xiao <yaoxia@chromium.org>
Reviewed-by: Josh Karlin <jkarlin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812683}