GitLab

There already existed http_auth_handler_ntlm_{portable,win}.cc. And yet
there was platform specific code in http_auth_handler_ntlm.cc along with
lots of preprocessor directives.

This CL cleans out the rest of http_auth_handler_ntlm.cc so that that
file only contains cross platform code.

No changes in behavior. This CL just moves code around.

R: mmenke@chromium.org
Bug: 927182
Change-Id: I25e20a658ad4fa46e1e9929f992bad2dcbb6dd7a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1881323
Commit-Queue: Asanka Herath <asanka@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710430}