Move core/layout/style to core/style

Source/core/layout/style/AppliedTextDecoration.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 AppliedTextDecoration_h
-#define AppliedTextDecoration_h
-
-#include "core/css/StyleColor.h"
-#include "core/layout/style/ComputedStyleConstants.h"
-
-namespace blink {
-
-class AppliedTextDecoration {
-public:
-    AppliedTextDecoration(TextDecoration, TextDecorationStyle, StyleColor);
-    explicit AppliedTextDecoration(TextDecoration);
-
-    TextDecoration line() const { return static_cast<TextDecoration>(m_line); }
-    TextDecorationStyle style() const { return static_cast<TextDecorationStyle>(m_style); }
-
-    bool isSimpleUnderline() const { return m_line == TextDecorationUnderline && m_style == TextDecorationStyleSolid && m_color.isCurrentColor(); }
-    bool operator==(const AppliedTextDecoration&) const;
-    bool operator!=(const AppliedTextDecoration& o) const { return !(*this == o); }
-
-private:
-    unsigned m_line : TextDecorationBits;
-    unsigned m_style : 3; // TextDecorationStyle
-    StyleColor m_color;
-};
-
-} // namespace blink
-
-#endif // AppliedTextDecoration_h