Update script to fetch new WebCore IDL

third_party/WebCore/Modules/mediastream/MediaStreamTrackList.idl

Index: third_party/WebCore/Modules/mediastream/MediaStreamTrackList.idl
diff --git a/third_party/WebCore/Modules/mediastream/MediaStreamTrackList.idl b/third_party/WebCore/Modules/mediastream/MediaStreamTrackList.idl
new file mode 100644
index 0000000000000000000000000000000000000000..4dd9c2972c8d5c898943f7e58a2bea6927b790df
--- /dev/null
+++ b/third_party/WebCore/Modules/mediastream/MediaStreamTrackList.idl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2011 Google 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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 core {
+
+    interface [
+        Conditional=MEDIA_STREAM,
+        IndexedGetter
+    ] MediaStreamTrackList {
+        MediaStreamTrack item(in [IsIndex] unsigned long index);
+
+        readonly attribute unsigned long length;
+    };
+
+}