dart2dart: Support for inner functions in new IR.

tests/language/closure_variable_shadow_test.dart

Index: tests/language/closure_variable_shadow_test.dart
diff --git a/tests/language/reify_typevar_test.dart b/tests/language/closure_variable_shadow_test.dart
similarity index 57%
copy from tests/language/reify_typevar_test.dart
copy to tests/language/closure_variable_shadow_test.dart
index 874efd681964049629144e7c794da601f50d354a..8f774b403491f7a3ff2c1cb67492ca646d269f0d 100644
--- a/tests/language/reify_typevar_test.dart
+++ b/tests/language/closure_variable_shadow_test.dart
@@ -4,13 +4,17 @@
 
 import "package:expect/expect.dart";
 
-class Foo<T> {
-    reify() {
-        return T;
+// The intermediate variable 'y' must either be preserved 
+// or parameters must be renamed.
+
+foo(x) {
+    var y = x;
+    bar(x) {
+        return y - x;
     }
+    return bar;
 }
 
 main() {
-    Expect.equals(int, new Foo<int>().reify());
-    Expect.equals(Foo, new Foo().runtimeType);
+    Expect.equals(-10, foo(10)(20));
 }