Pref service: Merge connectors and send a PrefRegistry in Connect().

services/preferences/persistent_pref_store_factory.cc

Index: services/preferences/persistent_pref_store_factory.cc
diff --git a/services/preferences/persistent_pref_store_factory.cc b/services/preferences/persistent_pref_store_factory.cc
index c9909fbbe6942d6d2a07d05e7f0d1a192e63c21c..ef63057bcc19eb1569e14c1e73906d72d18ee0b2 100644
--- a/services/preferences/persistent_pref_store_factory.cc
+++ b/services/preferences/persistent_pref_store_factory.cc
@@ -16,23 +16,26 @@ namespace {
 
 std::unique_ptr<PersistentPrefStoreImpl> CreateSimplePersistentPrefStore(
     mojom::SimplePersistentPrefStoreConfigurationPtr config,
-    base::SequencedWorkerPool* worker_pool) {
+    base::SequencedWorkerPool* worker_pool,
+    base::Closure on_initialized) {
   return base::MakeUnique<PersistentPrefStoreImpl>(
       new JsonPrefStore(config->pref_filename,
                         JsonPrefStore::GetTaskRunnerForFile(
                             config->pref_filename.DirName(), worker_pool),
                         nullptr),
-      nullptr);
+      nullptr, std::move(on_initialized));
 }
 
 }  // namespace
 
 std::unique_ptr<PersistentPrefStoreImpl> CreatePersistentPrefStore(
     mojom::PersistentPrefStoreConfigurationPtr configuration,
-    base::SequencedWorkerPool* worker_pool) {
+    base::SequencedWorkerPool* worker_pool,
+    base::Closure on_initialized) {
   if (configuration->is_simple_configuration()) {
     return CreateSimplePersistentPrefStore(
-        std::move(configuration->get_simple_configuration()), worker_pool);
+        std::move(configuration->get_simple_configuration()), worker_pool,
+        std::move(on_initialized));
   }
   NOTREACHED();
   return nullptr;