bug 735312 is removing the last caller, to this method can die.

Note that I could do much more cleanup than this, since some internal methods have redundant arguments now. Though, since the rewrite from hsivonen is pending review and I already commented on some of those there in my last review pass, it's not worth putting more stuff here. This removal will instead simplify things there, by killing code and clarifying what is left.

https://hg.mozilla.org/integration/mozilla-inbound/rev/8dcabd1aa9c7 Setting addon-compat for the method removal, even if the probability someone uses this is quite low.

and dev-doc-needed in case the interface page needs update

Documentation tweaked: https://developer.mozilla.org/En/Places_Developer_Guide#HTML_Import.2FExport The interface wasn't documented at all, but now it is, with these changes noted: https://developer.mozilla.org/en/XPCOM_Interface_Reference/nsIPlacesImportExportService Mentioned on Firefox 14 for developers.