Fix Autofill crash on mac address book entries

components/autofill/core/browser/personal_data_manager.h

 // Copyright 2013 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 COMPONENTS_AUTOFILL_CORE_BROWSER_PERSONAL_DATA_MANAGER_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_PERSONAL_DATA_MANAGER_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 64 matching lines @@
 
   // Scans the given |form| for importable Autofill data. If the form includes
   // sufficient address data, it is immediately imported. If the form includes
   // sufficient credit card data, it is stored into |credit_card|, so that we
   // can prompt the user whether to save this data.
   // Returns |true| if sufficient address or credit card data was found.
   bool ImportFormData(const FormStructure& form,
                       scoped_ptr<CreditCard>* credit_card);
 
   // Called to indicate |data_model| was used (to fill in a form). Updates
-  // the database accordingly.
+  // the database accordingly. Can invalidate |data_model|, particularly if
+  // it's a Mac address book entry.
   virtual void RecordUseOf(const AutofillDataModel& data_model);
 
   // Saves |imported_profile| to the WebDB if it exists. Returns the guid of
   // the new or updated profile, or the empty string if no profile was saved.
   virtual std::string SaveImportedProfile(
       const AutofillProfile& imported_profile);
 
   // Saves a credit card value detected in |ImportedFormData|. Returns the guid
   // of the new or updated card, or the empty string if no card was saved.
   virtual std::string SaveImportedCreditCard(
@@ skipping 275 matching lines @@
 
   // An observer to listen for changes to prefs::kAutofillEnabled.
   scoped_ptr<BooleanPrefMember> enabled_pref_;
 
   DISALLOW_COPY_AND_ASSIGN(PersonalDataManager);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_PERSONAL_DATA_MANAGER_H_