Throw exceptions on all failed cross-origin access checks.

LayoutTests/http/tests/security/cross-frame-access-object-prototype.html

Index: LayoutTests/http/tests/security/cross-frame-access-object-prototype.html
diff --git a/LayoutTests/http/tests/security/cross-frame-access-object-prototype.html b/LayoutTests/http/tests/security/cross-frame-access-object-prototype.html
index b1e2110511f1a47a54a95947481ece7f0aaa0c1c..79508645e543656cf4b60907542f9ed8479ff3b5 100644
--- a/LayoutTests/http/tests/security/cross-frame-access-object-prototype.html
+++ b/LayoutTests/http/tests/security/cross-frame-access-object-prototype.html
@@ -42,10 +42,9 @@
             log("\n----- test getting values cross-frame using Object.prototype -----\n");
 
             // Attempt to detect values set on the target frame.
-            try { shouldBe("Object.prototype.__lookupGetter__.call(targetFrame, 'myGetter');", "undefined"); } catch(e) { log(e); }
-            try { shouldBe("Object.prototype.__lookupSetter__.call(targetFrame, 'mySetter');", "undefined"); } catch(e) { log(e); }
-
-            try { shouldBe("Object.prototype.propertyIsEnumerable.call(targetFrame, 'myProp');", "false"); } catch(e) { log(e); }
+            try { shouldThrowException("Object.prototype.__lookupGetter__.call(targetFrame, 'myGetter');"); } catch(e) { log(e); }
+            try { shouldThrowException("Object.prototype.__lookupSetter__.call(targetFrame, 'mySetter');"); } catch(e) { log(e); }
+            try { shouldThrowException("Object.prototype.propertyIsEnumerable.call(targetFrame, 'myProp');"); } catch(e) { log(e); }
             // FIXME: Unfortunatly, all cross-cross frame calls hasOwnProperty will return true so there is no way to test this right now.
             // try { shouldBe("Object.prototype.hasOwnProperty.call(targetFrame, 'myProp');", "false"); } catch(e) { log(e); }