Move core/layout/style to core/style

Source/core/layout/style/AuthorStyleInfo.h

-// Copyright 2015 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 AuthorStyleInfo_h
-#define AuthorStyleInfo_h
-
-namespace blink {
-
-// This class knows whether the author specified a background and/or border on
-// some element. Some control elements use this information to figure out if the
-// element is sufficiently styled by the author to disable the native look.
-class AuthorStyleInfo {
-public:
-    AuthorStyleInfo() : AuthorStyleInfo(false, false) { }
-    AuthorStyleInfo(bool specifiesBackground, bool specifiesBorder)
-        : m_specifiesBackground(specifiesBackground)
-        , m_specifiesBorder(specifiesBorder)
-    {
-    }
-
-    bool specifiesBackground() const { return m_specifiesBackground; };
-    bool specifiesBorder() const { return m_specifiesBorder; };
-
-private:
-    bool m_specifiesBackground;
-    bool m_specifiesBorder;
-};
-
-} // namespace blink
-
-#endif // AuthorStyleInfo_h