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This will be used in Kaleidoscope to match against providers returned
from the API. Providers with matching origins will be considered
high watch time, and we will suggest them to the user.

Change-Id: Ic1181dde499ad39094442bd555a1b3b541f5ca2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2277091Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Commit-Queue: Sam Bowen <sgbowen@google.com>
Cr-Commit-Position: refs/heads/master@{#786074}