Add ResetModem method and call it once non_cellular activation is done.
Once non_cellular activation is done, the modem needs to be reset to get into the new activated state.

R=stevenjb@chromium.org,benchan@chromium.org
BUG=171535


Review URL: https://chromiumcodereview.appspot.com/12041029

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@178823 0039d316-1c4b-4281-b951-d872f2087c98
14 files changed