From b42136f8f95363ccf99fe302406ad18beda6503e Mon Sep 17 00:00:00 2001
From: Brendan Dahl <brendan.dahl@gmail.com>
Date: Wed, 19 Dec 2012 12:15:55 -0800
Subject: [PATCH] Fix migration for upgraded profiles.

---
 extensions/firefox/content/PdfJs.jsm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/extensions/firefox/content/PdfJs.jsm b/extensions/firefox/content/PdfJs.jsm
index f36fa75a7..786b4790c 100644
--- a/extensions/firefox/content/PdfJs.jsm
+++ b/extensions/firefox/content/PdfJs.jsm
@@ -156,6 +156,13 @@ let PdfJs = {
       types.push(PDF_CONTENT_TYPE);
     }
     prefs.setCharPref(PREF_DISABLED_PLUGIN_TYPES, types.join(','));
+
+    // Update the category manager in case the plugins are already loaded.
+    let categoryManager = Cc["@mozilla.org/categorymanager;1"];
+    categoryManager.getService(Ci.nsICategoryManager).
+                    deleteCategoryEntry("Gecko-Content-Viewers",
+                                        PDF_CONTENT_TYPE,
+                                        false);
   },
 
   // nsIObserver