Persist the choice of AutofillDataModel when using the requestAutocomplete dialog.

chrome/browser/ui/autofill/autofill_dialog_controller_impl.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_CONTROLLER_IMPL_H_
 #define CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_DIALOG_CONTROLLER_IMPL_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 431 matching lines @@
   void HandleSaveOrUpdateRequiredActions(
       const std::vector<wallet::RequiredAction>& required_actions);
 
   // Whether submission is currently waiting for |action| to be handled.
   bool IsSubmitPausedOn(wallet::RequiredAction action) const;
 
   // Called when there's nothing left to accept, update, save, or authenticate
   // in order to fill |form_structure_| and pass data back to the invoking page.
   void FinishSubmit();
 
+  // Writes to prefs the choice of AutofillDataModel for |section|.
+  void PersistAutofillChoice(DialogSection section,
+                             const std::string& guid,
+                             int variant);
+
+  // Reads from prefs the choice of AutofillDataModel for |section|. If there is
+  // no pref for this section, sets the outparams to default values.
+  void GetAutofillChoice(DialogSection section,
+                         std::string* guid,
+                         int* variant);
+
+  // Calculates which AutofillDataModel variant |model| is referring to.
+  size_t GetSelectedVariantForModel(const SuggestionsMenuModel& model);
+
   // Logs metrics when the dialog is submitted.
   void LogOnFinishSubmitMetrics();
 
   // Logs metrics when the dialog is canceled.
   void LogOnCancelMetrics();
 
   // Logs metrics when the edit ui is shown for the given |section|.
   void LogEditUiShownMetric(DialogSection section);
 
   // Logs metrics when a suggestion item from the given |model| is selected.
@@ skipping 125 matching lines @@
 
   // Whether the latency to display to the UI was logged to UMA yet.
   bool was_ui_latency_logged_;
 
   DISALLOW_COPY_AND_ASSIGN(AutofillDialogControllerImpl);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_DIALOG_CONTROLLER_IMPL_H_