This is a follow-up to the previous part, which actually changes one of
these callers to use Array<nsIIDRef> instead of [array] nsIIDPtr.
From doing this patch, it seems like we should consider changing
the type `nsIIDRef` to instead simply be `nsIID`, and treat it more like
the `AString` types from the POV of XPIDL. `nsIIDPtr` would then
continue to exist for backwards compatibility, but we can probably
remove almost all current consumers over time.
Depends on D19175
Differential Revision: https://phabricator.services.mozilla.com/D19176
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extra : moz-landing-system : lando
dbec7d4975