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This CL leverages crrev.com/c/1923611 by using the navigation ID within
WebRequestInfo to correlate a main-frame navigation request originating
from the previously active WebContents to the new WebContents loaded
from that request.

This is accomplished by adding the actions matched with a request to a
pending set of actions for a given navigation ID if the request is
associated main-frame navigation. Once the navigation completes, the
actions matched for the navigation are added to the badge text and
cleared from the pending set.

Bug: 992251
Change-Id: Iac7b3502a3598c9d06ab3261ea33f30d2cb20ee7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1956110
Commit-Queue: Kelvin Jiang <kelvinjiang@chromium.org>
Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726572}