[Autofill] Run autofill-profile de-dupe after sync starts if sync is enabled.

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 c913506b341c460db6f7e48b3af5be01a53fb67c..894110185b42690ed5c8bbe27f1467e6ebab108d 100644
--- a/components/autofill/core/browser/personal_data_manager.h
+++ b/components/autofill/core/browser/personal_data_manager.h
@@ -36,6 +36,10 @@ class SigninManagerBase;
 class PersonalDataManagerFactory;
 #endif
 
+namespace sync_driver {
+class SyncService;
+}
+
 namespace autofill {
 class AutofillInteractiveTest;
 class AutofillTest;
@@ -75,6 +79,10 @@ class PersonalDataManager : public KeyedService,
             SigninManagerBase* signin_manager,
             bool is_off_the_record);
 
+  // Called once the sync service is known to be instantiated and configured.
+  // Note that it may not be started, but it's preferences can be queried.
+  void OnSyncServiceConfigured(sync_driver::SyncService* sync_service);
+
   // WebDataServiceConsumer:
   void OnWebDataServiceRequestDone(WebDataServiceBase::Handle h,
                                    const WDTypedResult* result) override;
@@ -484,6 +492,10 @@ class PersonalDataManager : public KeyedService,
   // An observer to listen for changes to prefs::kAutofillWalletImportEnabled.
   std::unique_ptr<BooleanPrefMember> wallet_enabled_pref_;
 
+  // Set to true if autofill profile deduplication is enabled and needs to be
+  // performed on the next data refresh.
+  bool is_autofill_profile_dedupe_pending_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(PersonalDataManager);
 };