Add 'error' parameter to 'window.onerror' handlers.

LayoutTests/fast/events/window-onerror-isolatedworld-02.html

Index: LayoutTests/fast/events/window-onerror-isolatedworld-02.html
diff --git a/LayoutTests/fast/events/window-onerror-isolatedworld-02.html b/LayoutTests/fast/events/window-onerror-isolatedworld-02.html
index e502a93eaa63dd8355d9fcad52dbce95869959fa..85a43a6c9bf4545908145e1dcc47f32735e68af8 100644
--- a/LayoutTests/fast/events/window-onerror-isolatedworld-02.html
+++ b/LayoutTests/fast/events/window-onerror-isolatedworld-02.html
@@ -42,14 +42,22 @@
                 document.getElementById("console").appendChild(record);
             }
 
-            window.onerror = function(msg, url, line) {
-                log(isolatedWorld + " window.onerror: " + msg + " at " + lastUrlComponent(url) + ":" + line, "*");
+            window.onerror = function(msg, url, line, column, error) {
+                log(isolatedWorld + " window.onerror: " + msg + " at " + lastUrlComponent(url) + ", Line: " + line + ", Column: " + column, "*");
+                if (error)
+                    log("Error object present!");
+                else
+                    log("No error object present!");
                 return true;
             }
 
             window.addEventListener("error", function(e) {
                 var url = lastUrlComponent(e.filename);
-                log(isolatedWorld + " error event listener: " + e.message + " at " + url + ":" + e.lineno, "*");
+                log(isolatedWorld + " error event listener: " + e.message + " at " + url + ":, Line: " + e.lineno, "*");
+                if (e.error)
+                    log("Error object present!");
+                else
+                    log("No error object present!");
                 e.preventDefault();
             }, false);
         };