Correct handling of cross-frame functions in ddc.

pkg/dev_compiler/lib/js/es6/dart_sdk.js

Index: pkg/dev_compiler/lib/js/es6/dart_sdk.js
diff --git a/pkg/dev_compiler/lib/js/es6/dart_sdk.js b/pkg/dev_compiler/lib/js/es6/dart_sdk.js
index 993d4b0fdc0510699fb4db72f5ed0e34f3881597..89e4810544e7d872522f36e36db61c51ed9e0d02 100644
--- a/pkg/dev_compiler/lib/js/es6/dart_sdk.js
+++ b/pkg/dev_compiler/lib/js/es6/dart_sdk.js
@@ -59504,10 +59504,10 @@ html.Blob = class Blob extends _interceptors.Interceptor {
     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 {};