Convert URLLoaderFactoryRequest to new Mojo types

This CL converts URLLoaderFactoryRequest from
CreateURLLoaderFactory() in network_context.mojom and
ResolveAsURLLoaderFactory() in blob_url_store.mojom using
PendingReceiver and ReceiverSet.

Bug: 955171
Change-Id: I29c57d82d56464058d5eccca76a5a387c4714b68
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1844755
Commit-Queue: Julie Kim <[email protected]>
Reviewed-by: Daniel Murphy <[email protected]>
Reviewed-by: Clark DuVall <[email protected]>
Reviewed-by: Ken Rockot <[email protected]>
Reviewed-by: Kinuko Yasuda <[email protected]>
Reviewed-by: Colin Blundell <[email protected]>
Reviewed-by: Bo <[email protected]>
Cr-Commit-Position: refs/heads/master@{#704642}
50 files changed