[Sync] Make directory types registration explicit in ModelTypeRegistry

components/sync/engine/fake_sync_manager.cc

Index: components/sync/engine/fake_sync_manager.cc
diff --git a/components/sync/engine/fake_sync_manager.cc b/components/sync/engine/fake_sync_manager.cc
index b97e933697889d95df158e4eca59f8539feb91b0..8a57494533158e9b1ed11e322906d0f5d3ea2033 100644
--- a/components/sync/engine/fake_sync_manager.cc
+++ b/components/sync/engine/fake_sync_manager.cc
@@ -57,12 +57,6 @@ ModelTypeSet FakeSyncManager::GetAndResetDownloadedTypes() {
   return downloaded_types;
 }
 
-ModelTypeSet FakeSyncManager::GetAndResetEnabledTypes() {
-  ModelTypeSet enabled_types = enabled_types_;
-  enabled_types_.Clear();
-  return enabled_types;
-}
-
 ConfigureReason FakeSyncManager::GetAndResetConfigureReason() {
   ConfigureReason reason = last_configure_reason_;
   last_configure_reason_ = CONFIGURE_REASON_UNKNOWN;
@@ -144,20 +138,20 @@ void FakeSyncManager::UpdateCredentials(const SyncCredentials& credentials) {
   NOTIMPLEMENTED();
 }
 
-void FakeSyncManager::StartSyncingNormally(
-    const ModelSafeRoutingInfo& routing_info,
-    base::Time last_poll_time) {
+void FakeSyncManager::StartSyncingNormally(base::Time last_poll_time) {
+  // Do nothing.
+}
+
+void FakeSyncManager::StartConfiguration() {
   // Do nothing.
 }
 
 void FakeSyncManager::ConfigureSyncer(
     ConfigureReason reason,
     ModelTypeSet to_download,
-    const ModelSafeRoutingInfo& new_routing_info,
     const base::Closure& ready_task,
     const base::Closure& retry_task) {
   last_configure_reason_ = reason;
-  enabled_types_ = GetRoutingInfoTypes(new_routing_info);
   ModelTypeSet success_types = to_download;
   success_types.RemoveAll(configure_fail_types_);