GitLab

Plumbs DRP prefetch proxy hosts to where they will be used in
IsolatedPrerender.

Bug: 1042829
Change-Id: Id531927075470b37f79af4d7cf42b0352fe785ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2090147Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#748749}