Add a simple one shot and repeating timer API for Mojo.js.

gin/modules/module_registry.cc

Index: gin/modules/module_registry.cc
diff --git a/gin/modules/module_registry.cc b/gin/modules/module_registry.cc
index 035c25957685e4fe22b98cf797df53a82ca821a1..eda34880e7149e9b71c6c38069448da29f37f753 100644
--- a/gin/modules/module_registry.cc
+++ b/gin/modules/module_registry.cc
@@ -123,11 +123,10 @@ ModuleRegistry* ModuleRegistry::From(v8::Handle<Context> context) {
   return static_cast<ModuleRegistry*>(external->Value());
 }
 
-void ModuleRegistry::AddBuiltinModule(Isolate* isolate,
-                                      const std::string& id,
-                                      v8::Handle<ObjectTemplate> templ) {
+void ModuleRegistry::AddBuiltinModule(Isolate* isolate, const std::string& id,
+                                      v8::Handle<Value> module) {
   DCHECK(!id.empty());
-  RegisterModule(isolate, id, templ->NewInstance());
+  RegisterModule(isolate, id, module);
 }
 
 void ModuleRegistry::AddPendingModule(Isolate* isolate,