1 files changed, 10 insertions, 13 deletions
diff --git a/Source/WebCore/css/CSSStyleSheet.idl b/Source/WebCore/css/CSSStyleSheet.idl
index d02132f5f..0ceb415b7 100644
--- a/Source/WebCore/css/CSSStyleSheet.idl
+++ b/Source/WebCore/css/CSSStyleSheet.idl
@@ -18,21 +18,18 @@
  * Boston, MA 02110-1301, USA.
  */
 
-// Introduced in DOM Level 2:
 interface CSSStyleSheet : StyleSheet {
-    readonly attribute CSSRule          ownerRule;
-    readonly attribute CSSRuleList      cssRules;
+    readonly attribute CSSRule ownerRule;
+    readonly attribute CSSRuleList cssRules;
 
-    [ObjCLegacyUnnamedParameters, RaisesException] unsigned long insertRule([Default=Undefined] optional DOMString rule, 
-                                            [Default=Undefined] optional unsigned long index);
-    [RaisesException] void               deleteRule([Default=Undefined] optional unsigned long index);
+    [MayThrowException] unsigned long insertRule(DOMString rule, unsigned long index);
+    [MayThrowException, ImplementedAs=deprecatedInsertRule] unsigned long insertRule(DOMString rule); // Deprecated.
 
-    // IE Extensions
-    readonly attribute CSSRuleList      rules;
+    [MayThrowException] void deleteRule(unsigned long index);
 
-    [RaisesException] long addRule([Default=Undefined] optional DOMString selector,
-                 [Default=Undefined] optional DOMString style,
-                 optional unsigned long index);
-    [RaisesException] void removeRule([Default=Undefined] optional unsigned long index);
-};
+    readonly attribute CSSRuleList rules;
 
+    // The following two operations are WebKit-specific.
+    [MayThrowException] long addRule(optional DOMString selector = "undefined", optional DOMString style = "undefined", optional unsigned long index);
+    [MayThrowException] void removeRule(optional unsigned long index = 0);
+};