sync: SyncableService support for starting sync

chrome/browser/webdata/autocomplete_syncable_service.h

Index: chrome/browser/webdata/autocomplete_syncable_service.h
diff --git a/chrome/browser/webdata/autocomplete_syncable_service.h b/chrome/browser/webdata/autocomplete_syncable_service.h
index fd3244c74443db11035feb502638fbe97ad9f5c5..a5bfb5d82eb4d7b9a601b632b20b258ece2289f9 100644
--- a/chrome/browser/webdata/autocomplete_syncable_service.h
+++ b/chrome/browser/webdata/autocomplete_syncable_service.h
@@ -79,6 +79,11 @@ class AutocompleteSyncableService
   void UpdateCullSetting(bool cull_expired_entries);
   bool cull_expired_entries() const { return cull_expired_entries_; }
 
+  // Provides a StartSyncFlare to the SyncableService. See
+  // sync_start_util for more.
+  void InjectStartSyncFlare(
+      const syncer::SyncableService::StartSyncFlare& flare);
+
  protected:
   explicit AutocompleteSyncableService(
       autofill::AutofillWebDataService* web_data_service);
@@ -165,6 +170,8 @@ class AutocompleteSyncableService
   // via UpdateCullingSetting.
   bool cull_expired_entries_;
 
+  syncer::SyncableService::StartSyncFlare flare_;
+
   DISALLOW_COPY_AND_ASSIGN(AutocompleteSyncableService);
 };