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This CL creates new InvalidatorRegistrar.
New InvalidatorRegistrar depends on ObjectId as little as possible.

New InvalidatorRegistrar will be used on follow-up CL.
https://chromium-review.googlesource.com/c/chromium/src/+/1194032/5


Bug: 878446, 801985
Change-Id: I9f34d78a1eeb8d28a42ed0e90ee8701fba83192e
Reviewed-on: https://chromium-review.googlesource.com/1193887
Commit-Queue: Tatiana Gornak <melandory@chromium.org>
Reviewed-by: Pavel Yatsuk <pavely@chromium.org>
Cr-Commit-Position: refs/heads/master@{#587728}