mozilla/pdf.js — pull request #3012 by yurydelendik (2013-03-30 01:11:51+00:00)
Title: Fixes PDF application switch in Firefox.

Based on http://mxr.mozilla.org/mozilla-central/source/browser/components/preferences/applications.js#300 , if plugin is specified the preferredAction is irrelevant.

Fixes https://bugzilla.mozilla.org/show_bug.cgi?id=855666