Update script to fetch new WebCore IDL

third_party/WebCore/dom/MutationEvent.idl

Index: third_party/WebCore/dom/MutationEvent.idl
diff --git a/third_party/WebCore/dom/MutationEvent.idl b/third_party/WebCore/dom/MutationEvent.idl
new file mode 100644
index 0000000000000000000000000000000000000000..2765dc9c2a8778c2c2bf33659b2e363ce828ab71
--- /dev/null
+++ b/third_party/WebCore/dom/MutationEvent.idl
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2006 Apple Computer, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+module events {
+
+    // Introduced in DOM Level 2:
+    interface MutationEvent : Event {
+
+        // attrChangeType
+        const unsigned short MODIFICATION = 1;
+        const unsigned short ADDITION     = 2;
+        const unsigned short REMOVAL      = 3;
+
+        readonly attribute Node           relatedNode;
+        readonly attribute DOMString      prevValue;
+        readonly attribute DOMString      newValue;
+        readonly attribute DOMString      attrName;
+        readonly attribute unsigned short attrChange;
+
+        [ObjCLegacyUnnamedParameters] void initMutationEvent(in [Optional=DefaultIsUndefined] DOMString type, 
+                                              in [Optional=DefaultIsUndefined] boolean canBubble, 
+                                              in [Optional=DefaultIsUndefined] boolean cancelable, 
+                                              in [Optional=DefaultIsUndefined] Node relatedNode, 
+                                              in [Optional=DefaultIsUndefined] DOMString prevValue, 
+                                              in [Optional=DefaultIsUndefined] DOMString newValue, 
+                                              in [Optional=DefaultIsUndefined] DOMString attrName, 
+                                              in [Optional=DefaultIsUndefined] unsigned short attrChange);
+
+    };
+
+}