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

chrome/browser/chromeos/options/wifi_config_view.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_OPTIONS_WIFI_CONFIG_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_OPTIONS_WIFI_CONFIG_VIEW_H_
 
 #include <string>
 
 #include "base/file_path.h"
@@ skipping 36 matching lines @@
   // SelectFileDialog::Listener implementation.
   virtual void FileSelected(const FilePath& path, int index, void* params);
 
   // Login to network.
   virtual bool Login();
 
   // Save network information.
   virtual bool Save();
 
   // Get the typed in ssid.
-  const string16& GetSSID() const;
+  const std::string GetSSID() const;
   // Get the typed in passphrase.
-  const string16& GetPassphrase() const;
+  const std::string GetPassphrase() const;
 
   // Returns true if the textfields are non-empty and we can login.
   bool can_login() const { return can_login_; }
 
   // Focus the first field in the UI.
   void FocusFirstField();
 
  private:
   FRIEND_TEST_ALL_PREFIXES(WifiConfigViewTest, NoChangeSaveTest);
   FRIEND_TEST_ALL_PREFIXES(WifiConfigViewTest, ChangeAutoConnectSaveTest);
@@ skipping 11 matching lines @@
   // Whether or not we can log in. This gets recalculated when textfield
   // contents change.
   bool can_login_;
 
   WifiNetwork wifi_;
 
   views::Textfield* ssid_textfield_;
   views::Textfield* identity_textfield_;
   views::NativeButton* certificate_browse_button_;
   scoped_refptr<SelectFileDialog> select_file_dialog_;
-  FilePath certificate_path_;
+  std::string certificate_path_;
   views::Textfield* passphrase_textfield_;
   views::ImageButton* passphrase_visible_button_;
   views::Checkbox* autoconnect_checkbox_;
 
   DISALLOW_COPY_AND_ASSIGN(WifiConfigView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_OPTIONS_WIFI_CONFIG_VIEW_H_