Change the behavior of the [X] Save details to Wallet checkbox notification to:

chrome/browser/ui/autofill/autofill_dialog_models.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_UI_AUTOFILL_AUTOFILL_DIALOG_MODELS_H_
 #define CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_DIALOG_MODELS_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "base/prefs/pref_change_registrar.h"
 #include "base/string16.h"
 #include "ui/base/models/combobox_model.h"
 #include "ui/base/models/simple_menu_model.h"
 
 class PrefService;
 
 namespace autofill {
 
 class SuggestionsMenuModel;
 
@@ skipping 103 matching lines @@
 
   // Should be called when the Online Wallet sign-in attempt has failed.
   void SetHadWalletSigninError();
 
   bool had_wallet_error() const { return had_wallet_error_; }
 
   bool WalletIsSelected() const;
 
   int checked_item() const { return checked_item_; }
 
- private:
-  void PrefChanged(const std::string& pref);
-
-  // Sets |checked_item_| from the relevant pref.
-  void UpdateCheckmarkFromPref();
-
   // Command IDs of the items in this menu. For now, we only support a single
   // account, so there's only one wallet item.
   static const int kWalletItemId;
   static const int kAutofillItemId;
 
+ private:
   AccountChooserModelDelegate* account_delegate_;
 
-  PrefService* prefs_;
-
   // The command id of the currently active item.
   int checked_item_;
 
   // Whether there has been a Wallet error while the owning dialog has been
   // open.
   bool had_wallet_error_;
 
-  PrefChangeRegistrar pref_change_registrar_;
-
   DISALLOW_COPY_AND_ASSIGN(AccountChooserModel);
 };
 
 // A model for possible months in the Gregorian calendar.
 class MonthComboboxModel : public ui::ComboboxModel {
  public:
   MonthComboboxModel();
   virtual ~MonthComboboxModel();
 
   static string16 FormatMonth(int index);
@@ skipping 19 matching lines @@
  private:
   // The current year (e.g., 2012).
   int this_year_;
 
   DISALLOW_COPY_AND_ASSIGN(YearComboboxModel);
 };
 
 }  // autofill
 
 #endif  // CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_DIALOG_MODELS_H_