DOMException toString is not correct

LayoutTests/fast/dom/Range/script-tests/range-exceptions.js

Index: LayoutTests/fast/dom/Range/script-tests/range-exceptions.js
diff --git a/LayoutTests/fast/dom/Range/script-tests/range-exceptions.js b/LayoutTests/fast/dom/Range/script-tests/range-exceptions.js
index 563c741877414c46419a0d796c09e3707f9cdc1c..762d56c5c79118671f669e13efd42fb57c5c9ae0 100644
--- a/LayoutTests/fast/dom/Range/script-tests/range-exceptions.js
+++ b/LayoutTests/fast/dom/Range/script-tests/range-exceptions.js
@@ -22,9 +22,9 @@ node.appendChild(c2);
 var r = document.createRange();
 r.setStart(c1, 2);
 r.setEnd(c2, 3);
-shouldThrow("r.surroundContents(document.createElement('a'))", '"Error: InvalidStateError: DOM Exception 11"');
+shouldThrow("r.surroundContents(document.createElement('a'))", '"InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable."');
 
 // But not when we don't try to split the comment.
 r.setStart(c1, 0);
 r.setEnd(c1, 5);
-shouldThrow("r.surroundContents(document.createElement('a'))", '"Error: HierarchyRequestError: DOM Exception 3"');
+shouldThrow("r.surroundContents(document.createElement('a'))", '"HierarchyRequestError: A Node was inserted somewhere it doesn\'t belong."');