GitLab

This CL converts ipc::mojom::GenericInterface to new Mojo types
with PendingAssociatedReceiver instead of
GenericInterfaceAssociatedRequest.

It also updates GetAssociatedInterface() with
pending_associated_receiver from ipc/ipc.mojom.

Bug: 955171
Change-Id: I92ebbb25e51b1bbf5fba0417413d66455d277744
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1948385Reviewed-by: Sam McNally <sammc@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Commit-Queue: Julie Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#721310}