Correct handling of cross-frame functions in ddc.

pkg/dev_compiler/lib/js/legacy/dart_sdk.js

Index: pkg/dev_compiler/lib/js/legacy/dart_sdk.js
diff --git a/pkg/dev_compiler/lib/js/legacy/dart_sdk.js b/pkg/dev_compiler/lib/js/legacy/dart_sdk.js
index d960ce59d5e7d01de7869785a030c1f6ee237136..e0639d0a7afcfe3b542d9989b57e7efa3a4b8129 100644
--- a/pkg/dev_compiler/lib/js/legacy/dart_sdk.js
+++ b/pkg/dev_compiler/lib/js/legacy/dart_sdk.js
@@ -59507,10 +59507,10 @@ dart_library.library('dart_sdk', null, /* Imports */[
       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 {};