SDK fixes

lib/runtime/dart/convert.js

Index: lib/runtime/dart/convert.js
diff --git a/lib/runtime/dart/convert.js b/lib/runtime/dart/convert.js
index d2e5806a5a958352d59315afe6fe3d06b85b5e8c..c4114684cfc2f9124f1218662e3f941fa8f0343a 100644
--- a/lib/runtime/dart/convert.js
+++ b/lib/runtime/dart/convert.js
@@ -49,7 +49,7 @@ dart_library.library('dart/convert', null, /* Imports */[
       return byteStream.transform(this.decoder).fold(new core.StringBuffer(), dart.fn((buffer, string) => ((() => {
         dart.dsend(buffer, 'write', string);
         return buffer;
-      })()))).then(dart.fn(buffer => dart.toString(buffer), core.String, [dart.dynamic]));
+      })()), dart.dynamic, [dart.dynamic, core.String])).then(dart.fn(buffer => dart.toString(buffer), core.String, [dart.dynamic]));
     }
     static getByName(name) {
       if (name == null) return null;