GitLab

Add a new enum value HISTORY_DELETE to the
FlocIdComputed_EventTrigger enum. When history is deleted, recompute
the floc and log the event accordingly.

Bug: 1062736
Change-Id: I236df7cc3246cef8f836de752d405e5c209e2395
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2364208
Commit-Queue: Yao Xiao <yaoxia@chromium.org>
Reviewed-by: Josh Karlin <jkarlin@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800167}