[Autofill] Fix profiles with bad |use_date| values.

components/autofill/core/browser/personal_data_manager.h

Index: components/autofill/core/browser/personal_data_manager.h
diff --git a/components/autofill/core/browser/personal_data_manager.h b/components/autofill/core/browser/personal_data_manager.h
index 5357888b874fe3830725eea7e7e5265e684c31c8..9fcbc74b80a253ff97d6b096a415503021e76b2e 100644
--- a/components/autofill/core/browser/personal_data_manager.h
+++ b/components/autofill/core/browser/personal_data_manager.h
@@ -256,6 +256,9 @@ class PersonalDataManager : public KeyedService,
                            FindAndMergeDuplicateProfiles_ProfilesToDelete);
   FRIEND_TEST_ALL_PREFIXES(PersonalDataManagerTest,
                            FindAndMergeDuplicateProfiles_MergedProfileValues);
+  FRIEND_TEST_ALL_PREFIXES(PersonalDataManagerTest, ApplyProfileUseDatesFix);
+  FRIEND_TEST_ALL_PREFIXES(PersonalDataManagerTest,
+                           ApplyProfileUseDatesFix_NotAppliedTwice);
   friend class autofill::AutofillInteractiveTest;
   friend class autofill::AutofillTest;
   friend class autofill::PersonalDataManagerFactory;
@@ -437,6 +440,10 @@ class PersonalDataManager : public KeyedService,
       AutofillProfile* profile_to_merge,
       std::vector<std::string>* profile_guids_to_delete);
 
+  // Runs the Autofill use date fix routine if it's never been done. Returns
+  // whether the routine was run.
+  void ApplyProfileUseDatesFix();
+
   const std::string app_locale_;
 
   // The default country code for new addresses.