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

LayoutTests/fast/events/window-onerror-10-expected.txt

Index: LayoutTests/fast/events/window-onerror-10-expected.txt
diff --git a/LayoutTests/fast/events/window-onerror-10-expected.txt b/LayoutTests/fast/events/window-onerror-10-expected.txt
index ab309926a9d444253606cf716d430dd15cba68ee..ee37dd543e5d9d3e0278128203e85e1f246e1ff5 100644
--- a/LayoutTests/fast/events/window-onerror-10-expected.txt
+++ b/LayoutTests/fast/events/window-onerror-10-expected.txt
@@ -4,10 +4,31 @@ On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE
 
 
 window.onerror: "Uncaught Error: Inline exception." at onerror-test.js (Line: 6, Column: 40)
+Stack Trace:
+Error: Inline exception.
+    at throwException onerror-test.js:6:41
+    at window-onerror-10.html:22:9
+
 Returning 'true': the error should not be reported in the console as an unhandled exception.
+
+
+
 window.onerror: "Uncaught Error: exception in onload" at onerror-test.js (Line: 6, Column: 40)
+Stack Trace:
+Error: exception in onload
+    at throwException onerror-test.js:6:41
+    at onload window-onerror-10.html:11:290
+
 Returning 'true': the error should not be reported in the console as an unhandled exception.
+
+
+
 window.onerror: "Uncaught Error: exception in setTimeout" at onerror-test.js (Line: 6, Column: 40)
+Stack Trace:
+Error: exception in setTimeout
+    at throwException onerror-test.js:6:41
+    at window-onerror-10.html:11:240
+
 PASS successfullyParsed is true
 
 TEST COMPLETE