Don't generate a certificate browse button or passphrase field if cert path contains SETTINGS:

chrome/browser/chromeos/status/network_menu_button.cc

Index: chrome/browser/chromeos/status/network_menu_button.cc
diff --git a/chrome/browser/chromeos/status/network_menu_button.cc b/chrome/browser/chromeos/status/network_menu_button.cc
index 09c84f3ceaf74fc6b4888e2c5bb4dc6aa887832d..5e58d4e0fc0ec39625b8887d2f9930e02e5f3fde 100644
--- a/chrome/browser/chromeos/status/network_menu_button.cc
+++ b/chrome/browser/chromeos/status/network_menu_button.cc
@@ -133,7 +133,8 @@ void NetworkMenuButton::ActivatedAt(int index) {
       // If wifi network is not encrypted, then directly connect.
       // Otherwise, we open password dialog window.
       if (!wifi.encrypted()) {
-        cros->ConnectToWifiNetwork(wifi, string16(), string16(), string16());
+        cros->ConnectToWifiNetwork(wifi, std::string(),
+                                   std::string(), std::string());
       } else {
         NetworkConfigView* view = new NetworkConfigView(wifi, true);
         view->set_browser_mode(host_->IsBrowserMode());