[Cors]URLLoaderFactory: Don't allow changing Host header on redirects.

Bug: 973103
Change-Id: I463adfa133267b879e81875ee3252cc5fea684fa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1655732
Commit-Queue: Matt Menke <mmenke@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#668849}
7 files changed