[wip] simplify -webkit-appearance adjust step

Source/core/rendering/style/CachedUAStyle.h

Index: Source/core/rendering/style/CachedUAStyle.h
diff --git a/Source/core/rendering/style/CachedUAStyle.h b/Source/core/rendering/style/CachedUAStyle.h
deleted file mode 100644
index 610e095aa9e571c66568709b72ca65b410183dd8..0000000000000000000000000000000000000000
--- a/Source/core/rendering/style/CachedUAStyle.h
+++ /dev/null
@@ -1,60 +0,0 @@
- /*
- * Copyright (C) 2013 Google, Inc.
- * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
- * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
- *
- * 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.
- */
-
-#ifndef CachedUAStyle_h
-#define CachedUAStyle_h
-
-#include "core/rendering/style/RenderStyle.h"
-
-namespace blink {
-
-// RenderTheme::adjustStyle wants the background and borders
-// as specified by the UA sheets, excluding any author rules.
-// We use this class to cache those values during
-// applyMatchedProperties for later use during adjustRenderStyle.
-class CachedUAStyle {
-public:
-    static PassOwnPtr<CachedUAStyle> create(const RenderStyle* style)
-    {
-        return adoptPtr(new CachedUAStyle(style));
-    }
-
-    bool hasAppearance;
-    BorderData border;
-    FillLayer backgroundLayers;
-    StyleColor backgroundColor;
-
-private:
-    explicit CachedUAStyle(const RenderStyle* style)
-        : hasAppearance(true)
-        , border(style->border())
-        , backgroundLayers(style->backgroundLayers())
-        , backgroundColor(style->backgroundColor())
-    {
-        ASSERT(style->hasAppearance());
-    }
-};
-
-
-
-} // namespace blink
-
-#endif // CachedUAStyle_h