Substitution handled for most Send nodes.

tests/compiler/dart2js/resolver_test.dart

Index: tests/compiler/dart2js/resolver_test.dart
diff --git a/tests/compiler/dart2js/resolver_test.dart b/tests/compiler/dart2js/resolver_test.dart
index b728f53eafc347751b585090402be74e545e06d4..fc27ba8e64af0e5ca4b37ba0521e56f0dfac60b1 100644
--- a/tests/compiler/dart2js/resolver_test.dart
+++ b/tests/compiler/dart2js/resolver_test.dart
@@ -77,9 +77,9 @@ testTypeVariables() {
     visitor.visit(definition.type);
     InterfaceType type = visitor.mapping.getType(definition.type);
     Expect.equals(definition.type.typeArguments.length(),
-                  length(type.arguments));
+                  length(type.typeArguments));
     int index = 0;
-    Link<Type> arguments = type.arguments;
+    Link<Type> arguments = type.typeArguments;
     while (!arguments.isEmpty()) {
       Expect.equals(true, index < expectedElements.length);
       Expect.equals(expectedElements[index], arguments.head.element);