Move core/layout/style to core/style

Source/core/layout/style/TransformOrigin.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef TransformOrigin_h
-#define TransformOrigin_h
-
-#include "platform/Length.h"
-
-namespace blink {
-
-class TransformOrigin {
-public:
-    TransformOrigin(const Length& x, const Length& y, float z) : m_x(x), m_y(y), m_z(z) { }
-    bool operator==(const TransformOrigin& o) const { return m_x == o.m_x && m_y == o.m_y && m_z == o.m_z; }
-    bool operator!=(const TransformOrigin& o) const { return !(*this == o); }
-    const Length& x() const { return m_x; }
-    const Length& y() const { return m_y; }
-    float z() const { return m_z; }
-private:
-    Length m_x;
-    Length m_y;
-    float m_z;
-};
-
-} // namespace blink
-
-#endif // TransformOrigin_h