In origin telemetry, we want to record the matching statistic of each entry
in our tracking tables. To identify which entry a given URL matches, it needs
the hash value that matches the safe browsing database.
This patch passes the hash value to ProcessChannel so Features can obtain the
information and pass it.
Note that it is possible that an URL may find multiple matches. If an URL matches
hash A of list 1 and hash B of list 2, the parameter in ProcessChannel looks like:
aList = [list 1, list2]
aHashes = [hash A, hash B]
Differential Revision: https://phabricator.services.mozilla.com/D28789
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extra : moz-landing-system : lando
dlee
Andrea Marchesini