Remove NetworkState dependencies from networkTrayView.

This also eliminates NetworkTrayIconStrategy which became
fairly trivial with the ActiveNetworkIcon re-factoring.

Bug: 862420
Change-Id: Id5af34679e99626859b3ce3fba8faf199c501dc3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1614543
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: David Tseng <dtseng@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#661761}
11 files changed