Bug 1136341 - fix source actors representing inline scripts in XUL files so breakpoints work r=ejpbruel

--HG--
extra : rebase_source : 95f75743470a96f46e9dcb527f70d9f0d2c3253a

toolkit/devtools/server/actors/utils/TabSources.js

@@ -278,7 +278,7 @@ TabSources.prototype = {
     if (url) {
       try {
         let urlInfo = Services.io.newURI(url, null, null).QueryInterface(Ci.nsIURL);
-        if (urlInfo.fileExtension === "html") {
+        if (urlInfo.fileExtension === "html" || urlInfo.fileExtension === "xml") {
           spec.isInlineSource = true;
         }
         else if (urlInfo.fileExtension === "js") {