fixes #40, extension methods for primitive types

test/generated_sdk/lib/_internal/compiler/js_lib/js_helper.dart

Index: test/generated_sdk/lib/_internal/compiler/js_lib/js_helper.dart
diff --git a/test/generated_sdk/lib/_internal/compiler/js_lib/js_helper.dart b/test/generated_sdk/lib/_internal/compiler/js_lib/js_helper.dart
index d60bbc08a4ad0b9e20cf8071ee1b25929f86ac11..e7d04b39ce017e4fc9053444ce911ceb4c76d08f 100644
--- a/test/generated_sdk/lib/_internal/compiler/js_lib/js_helper.dart
+++ b/test/generated_sdk/lib/_internal/compiler/js_lib/js_helper.dart
@@ -93,14 +93,6 @@ abstract class InternalMap {
 /// JS engine.
 requiresPreamble() {}
 
-bool isJsIndexable(var object, var record) {
-  if (record != null) {
-    var result = dispatchRecordIndexability(record);
-    if (result != null) return result;
-  }
-  return object is JavaScriptIndexingBehavior;
-}
-
 String S(value) {
   if (value is String) return value;
   if (value is num) {