Move computeType to TypedElement and TypeDeclarationElement.

pkg/compiler/lib/src/enqueue.dart

Index: pkg/compiler/lib/src/enqueue.dart
diff --git a/pkg/compiler/lib/src/enqueue.dart b/pkg/compiler/lib/src/enqueue.dart
index 3d2bb00b7c8eec5cfe8714718db6efcd9e6cea79..7730e7d3ee8e2e5de4e3c3d8399fdcc71af678f5 100644
--- a/pkg/compiler/lib/src/enqueue.dart
+++ b/pkg/compiler/lib/src/enqueue.dart
@@ -613,14 +613,15 @@ abstract class Enqueuer {
     universe.callMethodsWithFreeTypeVariables.add(element);
   }
 
-  void registerClosurizedMember(Element element, Registry registry) {
+  void registerClosurizedMember(TypedElement element, Registry registry) {
     assert(element.isInstanceMember);
     registerClosureIfFreeTypeVariables(element, registry);
     compiler.backend.registerBoundClosure(this);
     universe.closurizedMembers.add(element);
   }
 
-  void registerClosureIfFreeTypeVariables(Element element, Registry registry) {
+  void registerClosureIfFreeTypeVariables(TypedElement element,
+                                          Registry registry) {
     if (element.computeType(compiler).containsTypeVariables) {
       compiler.backend.registerClosureWithFreeTypeVariables(
           element, this, registry);