Clean up after getPropertyCSSValue

Source/core/css/CSSValue.idl

Index: Source/core/css/CSSValue.idl
diff --git a/Source/core/css/CSSValue.idl b/Source/core/css/CSSValue.idl
deleted file mode 100644
index 6c12a97a0bfe9eced68d36e3eb4131963e942413..0000000000000000000000000000000000000000
--- a/Source/core/css/CSSValue.idl
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * 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.
- */
-
-[
-    Custom=Wrap,
-    DependentLifetime,
-    NotScriptWrappable,
-    WillBeGarbageCollected,
-    RuntimeEnabled=CSSValue,
-] interface CSSValue {
-
-    // UnitTypes
-    const unsigned short CSS_INHERIT         = 0;
-    const unsigned short CSS_PRIMITIVE_VALUE = 1;
-    const unsigned short CSS_VALUE_LIST      = 2;
-    const unsigned short CSS_CUSTOM          = 3;
-
-    [RaisesException=Setter] attribute DOMString? cssText;
-
-    readonly attribute unsigned short cssValueType;
-
-};
-