GitLab

Added a utility function to NetworkState to query if a network
requires activation. All UI code should use this instead of comparing the
Cellular.ActivationState property themselves, as this utility function
handles the "unknown" case as well.

BUG=289470
R=stevenjb@chromium.org

Review URL: https://codereview.chromium.org/23532065

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@223472 0039d316-1c4b-4281-b951-d872f2087c98