Merge from Chromium at DEPS revision r198571

This commit was generated by merge_to_master.py.

Change-Id: I3a7f89ea6b8c017335bd52739166aed708cad1e5
diff --git a/Source/core/css/CSSMediaRule.idl b/Source/core/css/CSSMediaRule.idl
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+++ b/Source/core/css/CSSMediaRule.idl
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+/*
+ * Copyright (C) 2006, 2007 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.
+ */
+
+// Introduced in DOM Level 2:
+interface CSSMediaRule : CSSRule {
+    readonly attribute MediaList media;
+    readonly attribute CSSRuleList cssRules;
+    
+     [RaisesException] unsigned long      insertRule([Default=Undefined] optional DOMString rule, 
+                                                 [Default=Undefined] optional unsigned long index);
+    [RaisesException] void               deleteRule([Default=Undefined] optional unsigned long index);
+};
+