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

chrome/browser/chromeos/cros/network_library.h

Index: chrome/browser/chromeos/cros/network_library.h
diff --git a/chrome/browser/chromeos/cros/network_library.h b/chrome/browser/chromeos/cros/network_library.h
index d68aeb2ad16aa1c2f6641bfc9e80f56dcaa9e27c..3d8d2864d6c3f117ec26ab23ce76be1466509986 100644
--- a/chrome/browser/chromeos/cros/network_library.h
+++ b/chrome/browser/chromeos/cros/network_library.h
@@ -306,15 +306,15 @@ class NetworkLibrary {
 
   // Connect to the specified wireless network with password.
   virtual void ConnectToWifiNetwork(WifiNetwork network,
-                                    const string16& password,
-                                    const string16& identity,
-                                    const string16& certpath) = 0;
+                                    const std::string& password,
+                                    const std::string& identity,
+                                    const std::string& certpath) = 0;
 
   // Connect to the specified wifi ssid with password.
-  virtual void ConnectToWifiNetwork(const string16& ssid,
-                                    const string16& password,
-                                    const string16& identity,
-                                    const string16& certpath,
+  virtual void ConnectToWifiNetwork(const std::string& ssid,
+                                    const std::string& password,
+                                    const std::string& identity,
+                                    const std::string& certpath,
                                     bool auto_connect) = 0;
 
   // Connect to the specified cellular network.
@@ -421,13 +421,13 @@ class NetworkLibraryImpl : public NetworkLibrary,
   virtual bool PreferredNetworkConnected();
   virtual bool PreferredNetworkFailed();
   virtual void ConnectToWifiNetwork(WifiNetwork network,
-                                    const string16& password,
-                                    const string16& identity,
-                                    const string16& certpath);
-  virtual void ConnectToWifiNetwork(const string16& ssid,
-                                    const string16& password,
-                                    const string16& identity,
-                                    const string16& certpath,
+                                    const std::string& password,
+                                    const std::string& identity,
+                                    const std::string& certpath);
+  virtual void ConnectToWifiNetwork(const std::string& ssid,
+                                    const std::string& password,
+                                    const std::string& identity,
+                                    const std::string& certpath,
                                     bool auto_connect);
   virtual void ConnectToCellularNetwork(CellularNetwork network);
   virtual void DisconnectFromWirelessNetwork(const WirelessNetwork& network);