Correctly attribute exceptions thrown inside a Worker's imported scripts.

LayoutTests/http/tests/workers/worker-importScripts-onerror-redirect-to-crossorigin.html

Index: LayoutTests/http/tests/workers/worker-importScripts-onerror-redirect-to-crossorigin.html
diff --git a/LayoutTests/http/tests/workers/worker-importScripts-onerror-redirect-to-crossorigin.html b/LayoutTests/http/tests/workers/worker-importScripts-onerror-redirect-to-crossorigin.html
index e918feaed359b2cafa00db582561e69e363c5fe9..f78409ce9fd78f3f610ca33a08ee743260dc5ff0 100644
--- a/LayoutTests/http/tests/workers/worker-importScripts-onerror-redirect-to-crossorigin.html
+++ b/LayoutTests/http/tests/workers/worker-importScripts-onerror-redirect-to-crossorigin.html
@@ -14,28 +14,28 @@
 
         var worker = new Worker('resources/worker-importscripts-onerror-redirect-to-crossorigin.js');
 
-        var workerOnerror;
+        var workerOnerror, pageOnerror;
         worker.onmessage = function (e) {
             workerOnerror = e.data;
-            shouldBeEqualToString("workerOnerror.message", "Uncaught undefined");
-            shouldBeEqualToString("workerOnerror.filename", "http://127.0.0.1:8000/workers/resources/worker-importscripts-onerror-redirect-to-crossorigin.js");
-            shouldEvaluateTo("workerOnerror.lineno", 6);
+            shouldBeEqualToString("workerOnerror.message", "Script error.");
+            shouldBeEqualToString("workerOnerror.filename", "");
+            shouldEvaluateTo("workerOnerror.lineno", 0);
             shouldEvaluateTo("workerOnerror.column", 0);
+            shouldBeNull("workerOnerror.error");
         };
 
         var onerrorMessage, onerrorURL, onerrorLine;
         worker.onerror = function (e) {
-            onerrorMessage = e.message;
-            onerrorURL = e.filename;
-            onerrorLine = e.lineno;
-            shouldBeEqualToString("onerrorMessage", "Uncaught undefined");
-            shouldBeEqualToString("onerrorURL", "http://127.0.0.1:8000/workers/resources/worker-importscripts-onerror-redirect-to-crossorigin.js");
-            shouldEvaluateTo("onerrorLine", 6);
+            pageOnerror = e;
+            shouldBeEqualToString("pageOnerror.message", "Script error.");
+            shouldBeEqualToString("pageOnerror.filename", "");
+            shouldEvaluateTo("pageOnerror.lineno", 0);
+            shouldEvaluateTo("pageOnerror.colno", 0);
+            shouldBeNull("pageOnerror.error");
 
             e.preventDefault();
             finishJSTest();
         };
     </script>
-    <script src="/resources/js-test-post.js"></script>
 </body>
 </html>