fixes #40, extension methods for primitive types

test/codegen/expect/sunflower/sunflower.html

Index: test/codegen/expect/sunflower/sunflower.html
diff --git a/test/codegen/expect/sunflower/sunflower.html b/test/codegen/expect/sunflower/sunflower.html
index a922f381c1db36b4f7b1460a42da51a49bd6681b..d06712d340886e09a38bc8b2e7cca64aa2e44881 100644
--- a/test/codegen/expect/sunflower/sunflower.html
+++ b/test/codegen/expect/sunflower/sunflower.html
@@ -39,7 +39,9 @@
 <script src="dev_compiler/runtime/dart/typed_data.js"></script>
 <script src="dev_compiler/runtime/dart/_isolate_helper.js"></script>
 <script src="dev_compiler/runtime/dart/_js_primitives.js"></script>
+<script src="dev_compiler/runtime/dart/_interceptors.js"></script>
 <script src="dev_compiler/runtime/dart/convert.js"></script>
+<script src="dev_compiler/runtime/dart/_native_typed_data.js"></script>
 <script src="circle.js"></script>
 <script src="dom.js"></script>
 <script src="painter.js"></script>