Fixed crash related to cellular network payment plan retreival.

BUG=chromium-os:8864
TEST=none

Review URL: http://codereview.chromium.org/4690002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@65405 0039d316-1c4b-4281-b951-d872f2087c98
WifiNetwork::WifiNetwork(const ServiceInfo* service)
    : WirelessNetwork(service) {
  encryption_ = service->security;
  passphrase_ = SafeString(service->passphrase);
  identity_ = SafeString(service->identity);
  cert_path_ = SafeString(service->cert_path);
  type_ = TYPE_WIFI;
}

WifiNetwork::WifiNetwork(const ServiceInfo* service)
    : WirelessNetwork(service) {
  encryption_ = service->security;
  passphrase_ = SafeString(service->passphrase);
  identity_ = SafeString(service->identity);
  cert_path_ = SafeString(service->cert_path);
  type_ = TYPE_WIFI;
}
