bug 1077595 - Use DataStoreChangeEvents to update Download API Manager c...

...ache up to date. Move tracking of active downloads into StatusBar instead of DownloadNotifications. r=crdlc,mhenretty
It would be nice to do this but I doubt we will need to expand on this ever.
On Nov 5, 2014 12:14 AM, "Arthur Chen" <notifications@github.com> wrote:

> In apps/settings/js/downloads/download_api_manager.js:
>
> > @@ -172,6 +246,10 @@
> >
> >      updateDownload: function(download) {
> >        _setDownload(download);
> > +    },
> > +
> > +    setListener: function(listener) {
> > +      downloadsListener = listener;
>
> And it should also allow different types of listeners to be added.
>
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> <https://github.com/mozilla-b2g/gaia/pull/25589/files#r19859556>.
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