Throw 'SecurityError' upon cross-origin Location access.

LayoutTests/http/tests/security/resources/cross-frame-access.js

Index: LayoutTests/http/tests/security/resources/cross-frame-access.js
diff --git a/LayoutTests/http/tests/security/resources/cross-frame-access.js b/LayoutTests/http/tests/security/resources/cross-frame-access.js
index fd524b53786598a7234ae97693c9998ce471c571..c8063edb4e3e764e53db63026b5a2749815c33f8 100644
--- a/LayoutTests/http/tests/security/resources/cross-frame-access.js
+++ b/LayoutTests/http/tests/security/resources/cross-frame-access.js
@@ -58,6 +58,24 @@ function canGet(keyPath)
     }
 }
 
+function accessThrowsException(keyPath) {
+    try {
+        eval("window." + keyPath);
+        return false;
+    } catch (e) {
+        return true;
+    }
+}
+
+function deletionThrowsException(keyPath) {
+    try {
+        eval("delete " + keyPath);
+        return false;
+    } catch (e) {
+        return true;
+    }
+}
+
 function canGetDescriptor(target, property)
 {
     try {