[Sync] Add support for performing a GetKey on startup.

sync/internal_api/internal_components_factory_impl.cc

Index: sync/internal_api/internal_components_factory_impl.cc
diff --git a/sync/internal_api/internal_components_factory_impl.cc b/sync/internal_api/internal_components_factory_impl.cc
index 062ee0bcd22f7404921c5f38a16782ed0bc3a8d1..3342d096ca14693bdaa6766d6eeb077b815b4ee2 100644
--- a/sync/internal_api/internal_components_factory_impl.cc
+++ b/sync/internal_api/internal_components_factory_impl.cc
@@ -29,12 +29,14 @@ InternalComponentsFactoryImpl::BuildContext(
     ThrottledDataTypeTracker* throttled_data_type_tracker,
     const std::vector<SyncEngineEventListener*>& listeners,
     sessions::DebugInfoGetter* debug_info_getter,
-    TrafficRecorder* traffic_recorder) {
+    TrafficRecorder* traffic_recorder,
+    bool keystore_encryption_enabled) {
   return scoped_ptr<sessions::SyncSessionContext>(
       new sessions::SyncSessionContext(
           connection_manager, directory, workers, monitor,
           throttled_data_type_tracker, listeners, debug_info_getter,
-          traffic_recorder));
+          traffic_recorder,
+          keystore_encryption_enabled));
 }
 
 scoped_ptr<syncable::DirectoryBackingStore>