Show ****** in wifi passphrase field

chrome/browser/chromeos/options/wifi_config_view.h

 // Copyright (c) 2012 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/basictypes.h"
@@ skipping 14 matching lines @@
 
 namespace views {
 class Checkbox;
 class Label;
 class ToggleImageButton;
 }
 
 namespace chromeos {
 
 class NetworkState;
+class PassphraseTextfield;
 
 namespace internal {
 class EAPMethodComboboxModel;
 class Phase2AuthComboboxModel;
 class SecurityComboboxModel;
 class ServerCACertComboboxModel;
 class UserCertComboboxModel;
 }
 
 // A dialog box for showing a password textfield.
@@ skipping 138 matching lines @@
   views::Label* identity_label_;
   views::Textfield* identity_textfield_;
   views::Label* identity_anonymous_label_;
   views::Textfield* identity_anonymous_textfield_;
   views::Checkbox* save_credentials_checkbox_;
   views::Checkbox* share_network_checkbox_;
   views::Label* shared_network_label_;
   scoped_ptr<internal::SecurityComboboxModel> security_combobox_model_;
   views::Combobox* security_combobox_;
   views::Label* passphrase_label_;
-  views::Textfield* passphrase_textfield_;
+  PassphraseTextfield* passphrase_textfield_;
   views::ToggleImageButton* passphrase_visible_button_;
   views::Label* error_label_;
 
   base::WeakPtrFactory<WifiConfigView> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WifiConfigView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_OPTIONS_WIFI_CONFIG_VIEW_H_