GitLab

Remove source filters in net/BUILD.gn.

This CL results in some warts (double is_win sections and the like)
that I'll clean up in a followup CL.

Bug: 1018739
Change-Id: I912161a34b293a47e179c0b983c162d4ac96af06
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1885654Reviewed-by: Eric Roman <eroman@chromium.org>
Commit-Queue: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710799}