GitLab

This CL converts PrerenderDispatcherAssociatedPtr,
PrerenderCancelerRequest, and PrerenderCancelerPtr
to new mojo types using Remote, AssociatedRemote,
PendingReceiver, and Receiver.

Bug: 955171
Change-Id: I75a60af8e0477726ce4f19aa0017eb97aea65cd2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1828781Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Oksana Zhuravlova <oksamyt@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Julie Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#701398}