Correct handling of cross-frame functions in ddc.

pkg/dev_compiler/lib/js/common/dart_sdk.js

Index: pkg/dev_compiler/lib/js/common/dart_sdk.js
diff --git a/pkg/dev_compiler/lib/js/common/dart_sdk.js b/pkg/dev_compiler/lib/js/common/dart_sdk.js
index f2826b9dcea2f59677770b44a71e6a11b8191c72..9e510b10195c35269d28327630d402f14d3f4ad1 100644
--- a/pkg/dev_compiler/lib/js/common/dart_sdk.js
+++ b/pkg/dev_compiler/lib/js/common/dart_sdk.js
@@ -59506,10 +59506,10 @@
       return html$.Blob._check(html$.Blob._create_2(blobParts, bag));
     }
     static _create_1(parts) {
-      return new window.Blob(parts);
+      return new self.Blob(parts);
     }
     static _create_2(parts, bag) {
-      return new window.Blob(parts, bag);
+      return new self.Blob(parts, bag);
     }
     static _create_bag() {
       return {};