Request: Fix userAgent tests

refs #401

@@ -2175,7 +2175,7 @@ function createPage(casper) {
         casper.handleReceivedResource(resource);
     };
     page.onResourceRequested = function onResourceRequested(requestData, request) {
-        casper.emit('resource.requested', request);
+        casper.emit('resource.requested', requestData, request);
         if (request.url === casper.requestUrl) {
             casper.emit('page.resource.requested', request);
         }

@@ -6,8 +6,8 @@ function testUA(ua, match) {
     );
 }
 
-function fetchUA(request) {
-    var headers = request.headers.filter(function(header) {
+function fetchUA(requestData, request) {
+    var headers = requestData.headers.filter(function(header) {
         return header.name === "User-Agent";
     });
     casper.test.assert(headers.length > 0);