dart2js: Register helpers for updating send to type variable.

pkg/compiler/lib/src/resolution/registry.dart

Index: pkg/compiler/lib/src/resolution/registry.dart
diff --git a/pkg/compiler/lib/src/resolution/registry.dart b/pkg/compiler/lib/src/resolution/registry.dart
index c222afe129fe626fe8daa355e7f436fba44bf57f..625f8f0056703d1bdcf582a560920bd16a3b6beb 100644
--- a/pkg/compiler/lib/src/resolution/registry.dart
+++ b/pkg/compiler/lib/src/resolution/registry.dart
@@ -455,12 +455,8 @@ class ResolutionRegistry implements Registry {
     backend.resolutionCallbacks.onSuperNoSuchMethod(this);
   }
 
-  void registerClassUsingVariableExpression(ClassElement element) {
-    backend.registerClassUsingVariableExpression(element);
-  }
-
-  void registerTypeVariableExpression() {
-    backend.resolutionCallbacks.onTypeVariableExpression(this);
+  void registerTypeVariableExpression(TypeVariableElement element) {
+    backend.resolutionCallbacks.onTypeVariableExpression(this, element);
   }
 
   void registerTypeLiteral(Send node, DartType type) {