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Add IPH globally scoped data and add trigger logic for install IPH that
doesn't show IPH unless site-engagement score is above 10 and IPH hasn't
been shown for this site for 90 days, and hasn't been shown globally for
14 days, and hasn't been ignored by user 3 days in a row for this site
and hasn't been ignored by user 4 days in a row globally.

Bug: 1149670
Change-Id: Idff12df63673f6e8e1fd63383f7fc57c07eb748a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2530197
Commit-Queue: Phillis Tang <phillis@chromium.org>
Reviewed-by: Michael Wasserman <msw@chromium.org>
Reviewed-by: Daniel Murphy <dmurph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#828483}