Substitution added to DartType

sdk/lib/_internal/compiler/implementation/closure.dart

Index: sdk/lib/_internal/compiler/implementation/closure.dart
diff --git a/sdk/lib/_internal/compiler/implementation/closure.dart b/sdk/lib/_internal/compiler/implementation/closure.dart
index 4d6be1c78fbc59b06ae6509edd36b22eb0652fd5..3d5feef0376368bca40e3c67adf84a8c80ed7124 100644
--- a/sdk/lib/_internal/compiler/implementation/closure.dart
+++ b/sdk/lib/_internal/compiler/implementation/closure.dart
@@ -371,7 +371,7 @@ class ClosureTranslator extends Visitor {
         return true;
       } else if (type is InterfaceType) {
         InterfaceType ifcType = type;
-        for (DartType argument in ifcType.arguments) {
+        for (DartType argument in ifcType.typeArguments) {
           if (hasTypeVariable(argument)) {
             return true;
           }
@@ -385,7 +385,7 @@ class ClosureTranslator extends Visitor {
         useLocal(type.element);
       } else if (type is InterfaceType) {
         InterfaceType ifcType = type;
-        for (DartType argument in ifcType.arguments) {
+        for (DartType argument in ifcType.typeArguments) {
           analyzeTypeVariables(argument);
         }
       }