Store [-webkit-]transform-origin as a TransformOrigin.

Source/core/rendering/style/StyleTransformData.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 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,
@@ skipping 10 matching lines @@
 
 #include "config.h"
 #include "core/rendering/style/StyleTransformData.h"
 
 #include "core/rendering/style/RenderStyle.h"
 
 namespace blink {
 
 StyleTransformData::StyleTransformData()
     : m_operations(RenderStyle::initialTransform())
-    , m_x(RenderStyle::initialTransformOriginX())
-    , m_y(RenderStyle::initialTransformOriginY())
-    , m_z(RenderStyle::initialTransformOriginZ())
+    , m_origin(RenderStyle::initialTransformOrigin())
 {
 }
 
 StyleTransformData::StyleTransformData(const StyleTransformData& o)
     : RefCounted<StyleTransformData>()
     , m_operations(o.m_operations)
-    , m_x(o.m_x)
-    , m_y(o.m_y)
-    , m_z(o.m_z)
+    , m_origin(o.m_origin)
 {
 }
 
 bool StyleTransformData::operator==(const StyleTransformData& o) const
 {
-    return m_x == o.m_x && m_y == o.m_y && m_z == o.m_z && m_operations == o.m_operations;
+    return m_origin == o.m_origin && m_operations == o.m_operations;
 }
 
 } // namespace blink