update_engine: Convert NetworkConnectionType to enum class.
This patch simply converts the old NetworkConnectionType enum to an
enum class and updates all the callsites and formatting.
BUG=None
TEST=emerge-link update_engine.
Change-Id: I29a281f1648e2d8ef74b1046d01a212022280461
Reviewed-on: https://chromium-review.googlesource.com/289585
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>
Trybot-Ready: Alex Deymo <deymo@chromium.org>
Tested-by: Alex Deymo <deymo@chromium.org>
Trybot-Ready: Prathmesh Prabhu <pprabhu@chromium.org>
7 files changed