Boris Zbarsky wrote:
> Alex Yip wrote:
>> Thanks Boris, is the CAPS system being removed?
> 
> Not completely, but if DOM is switched off xpconnect, it will no longer 
> be making CAPS calls (which will be a big performance benefit).
> 
>> If so, is there a replacement for it?
> 
> Not really, as far as I know.

We should have a separate preference for turning off window.postMessage 
though, as it's a feature that affects security.

If there isn't such a pref already, please file a bug on it and cc me.

/ Jonas
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