Define Window's opener when there's no browsing context#4379

Merged

annevk merged 3 commits intomasterfrom annevk/window-opener-sans-bc

Mar 4, 2019

+16-11

Commits on Feb 19, 2019

Define Window's opener when there's no browsing context
annevk
committed
deal with null the way Firefox deals with it (other browsers cannot really be tested due to other failures)
annevk
committed

Commits on Feb 22, 2019

oops
annevk
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