Correct handling of cross-frame functions in ddc.

pkg/dev_compiler/tool/input_sdk/lib/html/dart2js/html_dart2js.dart

Index: pkg/dev_compiler/tool/input_sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/pkg/dev_compiler/tool/input_sdk/lib/html/dart2js/html_dart2js.dart b/pkg/dev_compiler/tool/input_sdk/lib/html/dart2js/html_dart2js.dart
index e103c7df667ba645ea3ac771bae6a663b685c85a..d24f6daabdf5e0e17b142df61f4f1a10959c4ebf 100644
--- a/pkg/dev_compiler/tool/input_sdk/lib/html/dart2js/html_dart2js.dart
+++ b/pkg/dev_compiler/tool/input_sdk/lib/html/dart2js/html_dart2js.dart
@@ -1214,8 +1214,8 @@ class Blob extends Interceptor {
     return _create_2(blobParts, bag);
   }
 
-  static _create_1(parts) => JS('Blob', 'new Blob(#)', parts);
-  static _create_2(parts, bag) => JS('Blob', 'new Blob(#, #)', parts, bag);
+  static _create_1(parts) => JS('Blob', 'new window.Blob(#)', parts);
+  static _create_2(parts, bag) => JS('Blob', 'new window.Blob(#, #)', parts, bag);
 
   static _create_bag() => JS('var', '{}');
   static _bag_set(bag, key, value) { JS('void', '#[#] = #', bag, key, value); }