Migrate away from using 'var' in network directory.

Just simple refactoring.

Bug: 792774
Change-Id: I90e97fb8fd4e1ab5bb91f03b19ec8031eeb24375
Reviewed-on: https://chromium-review.googlesource.com/c/1326145
Reviewed-by: Alexander Hendrich <hendrich@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Roman Aleksandrov <raleksandrov@google.com>
Cr-Commit-Position: refs/heads/master@{#606918}
12 files changed