Revert "Change signature of lookupConstructor to only require a name."

pkg/analyzer2dart/lib/src/modely.dart

Index: pkg/analyzer2dart/lib/src/modely.dart
diff --git a/pkg/analyzer2dart/lib/src/modely.dart b/pkg/analyzer2dart/lib/src/modely.dart
index 3d3f2854a90ec57b14091edbf8f785477e779661..6cc1f50efce01a96e4754b4ec7d556e80c3138cc 100644
--- a/pkg/analyzer2dart/lib/src/modely.dart
+++ b/pkg/analyzer2dart/lib/src/modely.dart
@@ -651,6 +651,11 @@ class ClassElementY extends TypeDeclarationElementY
   int get supertypeLoadState => unsupported('supertypeLoadState');
 
   @override
+  validateConstructorLookupResults(selector,  result, noMatch) {
+    unsupported('validateConstructorLookupResults');
+  }
+
+  @override
   bool get isEnumClass => unsupported('isEnum');
 }