For add network, if password is empty, we search for a hidden network with no security. BUG=chromium-os:8193 TEST=manual Review URL: http://codereview.chromium.org/4142012
For add network, if password is empty, we search for a hidden network with no security.
BUG=chromium-os:8193
TEST=manual
Review URL: http://codereview.chromium.org/4142012

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@64461 0039d316-1c4b-4281-b951-d872f2087c98

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