Bug 603229 - Can't init on DOMContentLoaded when opening an image [r=mfinkle]

--HG--
extra : rebase_source : e3dd1da645d695aa862b2d8870eb677c9b9da731

mobile/chrome/content/browser-ui.js

@@ -447,9 +447,12 @@ var BrowserUI = {
 
     // Push the panel initialization out of the startup path
     // (Using a message because we have no good way to delay-init [Bug 535366])
-    messageManager.addMessageListener("DOMContentLoaded", function() {
+    messageManager.addMessageListener("pageshow", function() {
+      if (getBrowser().currentURI.spec == "about:blank")
+        return;
+
       // We only want to delay one time
-      messageManager.removeMessageListener("DOMContentLoaded", arguments.callee, true);
+      messageManager.removeMessageListener("pageshow", arguments.callee, true);
 
       // We unhide the panelUI so the XBL and settings can initialize
       Elements.panelUI.hidden = false;