Bug 33890: Rename xul files to xhtml

Also remove a customizeToolbar.xul line from chrome.manifest,
since it's not needed.

chrome.manifest

@@ -132,7 +132,6 @@ locale torbutton zh-TW chrome/locale/zh-TW/
 locale torbutton zu chrome/locale/zu/
 
 skin torbutton classic/1.0 chrome/skin/
-style chrome://global/content/customizeToolbar.xul chrome://torbutton/skin/torbutton.css
 
 # Firefox 4-style component registration
 component {f605ec27-d867-44b5-ad97-2a29276642c3} components/dragDropFilter.js

chrome/content/tor-circuit-display.js

@@ -5,7 +5,7 @@
 // call earlier functions). The file can be processed
 // with docco.js to produce pretty documentation.
 //
-// This script is to be embedded in torbutton.xul. It defines a single global
+// This script is to be embedded in torbutton.xhtml. It defines a single global
 // function, createTorCircuitDisplay(), which activates the automatic Tor
 // circuit display for the current tab and any future tabs.
 //

components/external-app-blocker.js

@@ -73,7 +73,7 @@ ExternalAppBlocker.prototype =
   /*
    * The _showPrompt() implementation uses some XUL and JS that is part of the
    * browser's confirmEx() implementation. Specifically, _showPrompt() depends
-   * on chrome://global/content/commonDialog.xul as well as some of the code
+   * on chrome://global/content/commonDialog.xhtml as well as some of the code
    * in resource://gre/modules/SharedPromptUtils.jsm.
    */
   _showPrompt: function(aWindowContext) {
@@ -107,7 +107,7 @@ ExternalAppBlocker.prototype =
     };
 
     let propBag = PromptUtils.objectToPropBag(args);
-    let uri = "chrome://global/content/commonDialog.xul";
+    let uri = "chrome://global/content/commonDialog.xhtml";
     let promptWin = Services.ww.openWindow(parentWin, uri, "_blank",
                                     "centerscreen,chrome,titlebar", propBag);
     promptWin.addEventListener("load", aEvent => {