Update script to fetch new WebCore IDL

third_party/WebCore/css/CSSRuleList.idl

Index: third_party/WebCore/css/CSSRuleList.idl
diff --git a/third_party/WebCore/css/CSSRuleList.idl b/third_party/WebCore/css/CSSRuleList.idl
new file mode 100644
index 0000000000000000000000000000000000000000..7ac533b8ac5f280b892d3d4b7e8ff38e8f575ab6
--- /dev/null
+++ b/third_party/WebCore/css/CSSRuleList.idl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+module css {
+
+    // Introduced in DOM Level 2:
+    interface [
+        JSCustomIsReachable,
+        IndexedGetter,
+        V8DependentLifetime
+    ] CSSRuleList {
+        readonly attribute unsigned long    length;
+        CSSRule           item(in [Optional=DefaultIsUndefined] unsigned long index);
+    };
+
+}