The aParams.referrer in openURIInFrame is/was being passed through to _openURIInNewTab as a string, when it expects a URI. A test should be added to catch this (see bug 1147911 comment 19). It possibly wasn't causing a problem because we were only currently calling openURIInFrame with a null aURI, which I think meant the referrer was not used in a way that caused a problem.
Maybe we should just remove the param if it's always null?
Priority: -- → P3
(In reply to :Gijs Kruitbosch from comment #1) > Maybe we should just remove the param if it's always null? Hopefully, I'll be using it in bug 1147911 patch part 7.
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