Update script to fetch new WebCore IDL

third_party/WebCore/css/CSSRule.idl

Index: third_party/WebCore/css/CSSRule.idl
diff --git a/third_party/WebCore/css/CSSRule.idl b/third_party/WebCore/css/CSSRule.idl
new file mode 100644
index 0000000000000000000000000000000000000000..dc65688d7cb36ccb84cfc1d5f7699ae53226f3cd
--- /dev/null
+++ b/third_party/WebCore/css/CSSRule.idl
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
+ *
+ * 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 css {
+
+    // Introduced in DOM Level 2:
+    interface [
+        JSCustomMarkFunction,
+        JSGenerateIsReachable,
+        CustomToJSObject,
+        ObjCPolymorphic,
+        V8DependentLifetime
+    ] CSSRule {
+
+        // RuleType
+        const unsigned short UNKNOWN_RULE = 0;
+        const unsigned short STYLE_RULE = 1;
+        const unsigned short CHARSET_RULE = 2;
+        const unsigned short IMPORT_RULE = 3;
+        const unsigned short MEDIA_RULE = 4;
+        const unsigned short FONT_FACE_RULE = 5;
+        const unsigned short PAGE_RULE = 6;
+        const unsigned short WEBKIT_KEYFRAMES_RULE = 7;
+        const unsigned short WEBKIT_KEYFRAME_RULE = 8;
+        const unsigned short WEBKIT_REGION_RULE = 10;
+
+        readonly attribute unsigned short   type;
+
+                 attribute [TreatReturnedNullStringAs=Null, TreatNullAs=NullString] DOMString        cssText
+                     setter raises (DOMException);
+
+        readonly attribute CSSStyleSheet    parentStyleSheet;
+        readonly attribute CSSRule          parentRule;
+
+    };
+
+}