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This CL converts VisitedLinkNotificationSinkPtr and
VisitedLinkNotificationSinkRequest to new Mojo types
using Remote, ReceiverSet and PendingReceiver.

Bug: 955171
Change-Id: I3ac5ddc1c7e92072ab1848d2478225cc50dfc29e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1816059Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Commit-Queue: Julie Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#699676}