Don't instantiate a new InterfaceTypeImpl for a ClassElement without type parameters.

pkg/analyzer/lib/src/summary/resynthesize.dart

Index: pkg/analyzer/lib/src/summary/resynthesize.dart
diff --git a/pkg/analyzer/lib/src/summary/resynthesize.dart b/pkg/analyzer/lib/src/summary/resynthesize.dart
index 69298a5fd0a1274d0a073f01f3e4e76dd5ec06f0..aefe990f5b559fd372ea37224b23d2ffe4958fe0 100644
--- a/pkg/analyzer/lib/src/summary/resynthesize.dart
+++ b/pkg/analyzer/lib/src/summary/resynthesize.dart
@@ -1309,7 +1309,7 @@ class _ReferenceInfo {
       // If type arguments are specified, use them.
       // Otherwise, delay until they are requested.
       if (numTypeParameters == 0) {
-        typeArguments = const <DartType>[];
+        return element.type;
       } else if (numTypeArguments == numTypeParameters) {
         typeArguments = new List<DartType>(numTypeParameters);
         for (int i = 0; i < numTypeParameters; i++) {