Remove element from DynamicType.

sdk/lib/_internal/compiler/implementation/js_backend/custom_elements_analysis.dart

Index: sdk/lib/_internal/compiler/implementation/js_backend/custom_elements_analysis.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/custom_elements_analysis.dart b/sdk/lib/_internal/compiler/implementation/js_backend/custom_elements_analysis.dart
index 807b896a002dc336106c20c55eb369fb5d63a43c..60f16082e22e504e0c9aa4324fa6c0bfb6834ee1 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/custom_elements_analysis.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/custom_elements_analysis.dart
@@ -73,16 +73,16 @@ class CustomElementsAnalysis {
     joinFor(enqueuer).instantiatedClasses.add(classElement);
   }
 
-  void registerTypeLiteral(Element element, Enqueuer enqueuer) {
+  void registerTypeLiteral(DartType type, Enqueuer enqueuer) {
     // In codegen we see the TypeConstants instead.
     if (!enqueuer.isResolutionQueue) return;
 
-    if (element.isClass) {
+    if (type.isInterfaceType) {
       // TODO(sra): If we had a flow query from the type literal expression to
       // the Type argument of the metadata lookup, we could tell if this type
       // literal is really a demand for the metadata.
-      resolutionJoin.selectedClasses.add(element);
-    } else {
+      resolutionJoin.selectedClasses.add(type.element);
+    } else if (type.isTypeVariable) {
       // This is a type parameter of a parameterized class.
       // TODO(sra): Is there a way to determine which types are bound to the
       // parameter?