window.open returns undefined after compilation with dart2js

[DartBot]

This issue was originally filed by halverneu...@gmail.com

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What steps will reproduce the problem?
1 var myWindow = window.open("", "_blank");
2 var myWindowDocument = myWindow.document;

(works in JavaScript, works in Dart, when complied with Dart2Js, returns:)
(Uncaught NoSuchMethodError: undefined is not a function)
(on line 2.)

What is the expected output? What do you see instead?
Expected output is a reference to the newly created window. Instead undefined in returned.

What version of the product are you using? On what operating system?
dart2js: 1.5.1
Chrome: 35.0.1916.153
OS: Kubuntu 14.04 64-bit

"pub update" last ran on 28JUN2014 @­15:00 PDT

Please provide any additional information below.

[floitschG]

Added Area-Library, Library-Html, Triaged labels.

[DartBot]

This comment was originally written by @zoechi

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This might be related https://code.google.com/p/dart/issues/detail?id=20143

[alan-knight]

I think this is the cross-frame restrictions which we should relax. It doesn't work for me in Dartium either. I get "Exception: Class '_DOMWindowCrossFrame' has no instance getter 'document'."

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Added Duplicate label.
Marked as being merged into #20146.