The Director function has been superseded by Rewrite.
Rewrite avoids fundamental security issues with hop-by-hop header
handling in the Director API and has better default handling
of X-Forwarded-* headers.
Fixes#73161
Change-Id: Iadaf3070e0082458f79fb892ade51cb7ce832802
Reviewed-on: https://go-review.googlesource.com/c/go/+/708615
Reviewed-by: Nicholas Husin <husin@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Nicholas Husin <nsh@golang.org>
