Fix resolution and canonicalization of typedefs and function types in

runtime/vm/object_service.cc

Index: runtime/vm/object_service.cc
diff --git a/runtime/vm/object_service.cc b/runtime/vm/object_service.cc
index 99e115733ff126ac74ed544e315fda25aeb03766..6e3988666dcaf16aff281918b43e01cda520c669 100644
--- a/runtime/vm/object_service.cc
+++ b/runtime/vm/object_service.cc
@@ -278,6 +278,7 @@ static void AddFunctionServiceId(const JSONObject& jsobj,
 
 
 void Function::PrintJSONImpl(JSONStream* stream, bool ref) const {
+  // TODO(regis): Handle signature functions separately.
   Class& cls = Class::Handle(Owner());
   ASSERT(!cls.IsNull());
   Error& err = Error::Handle();
@@ -1099,6 +1100,7 @@ void AbstractType::PrintJSONImpl(JSONStream* stream, bool ref) const {
 
 
 void Type::PrintJSONImpl(JSONStream* stream, bool ref) const {
+  // TODO(regis): Function types are not handled properly.
   JSONObject jsobj(stream);
   PrintSharedInstanceJSON(&jsobj, ref);
   jsobj.AddProperty("kind", "Type");