Move SelectionState out of LayoutObject and into Line Layout API

Source/core/layout/line/RootInlineBox.h

 /*
  * Copyright (C) 2003, 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,
  * 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 RootInlineBox_h
 #define RootInlineBox_h
 
 #include "core/layout/api/LineLayoutItem.h"
+#include "core/layout/api/SelectionState.h"
 #include "core/layout/line/InlineFlowBox.h"
 #include "platform/text/BidiContext.h"
 
 namespace blink {
 
 class EllipsisBox;
 class HitTestResult;
 class LayoutBlockFlow;
 
 struct BidiStatus;
@@ skipping 69 matching lines @@
 
     int baselinePosition(FontBaseline baselineType) const final;
     LayoutUnit lineHeight() const final;
 
     void paint(const PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) override;
     bool nodeAtPoint(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) final;
 
     using InlineBox::hasSelectedChildren;
     using InlineBox::setHasSelectedChildren;
 
-    LayoutObject::SelectionState selectionState() const final;
+    SelectionState selectionState() const final;
     InlineBox* firstSelectedBox() const;
     InlineBox* lastSelectedBox() const;
 
     GapRects lineSelectionGap(const LayoutBlock* rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock, LayoutUnit selTop, LayoutUnit selHeight, const PaintInfo*) const;
 
     LayoutBlockFlow& block() const;
 
     InlineBox* closestLeafChildForPoint(const LayoutPoint&, bool onlyEditableLeaves);
     InlineBox* closestLeafChildForLogicalLeftPosition(LayoutUnit, bool onlyEditableLeaves = false);
 
@@ skipping 72 matching lines @@
     LayoutUnit m_lineBottom;
     LayoutUnit m_lineTopWithLeading;
     LayoutUnit m_lineBottomWithLeading;
     LayoutUnit m_selectionBottom;
     LayoutUnit m_paginationStrut;
 };
 
 } // namespace blink
 
 #endif // RootInlineBox_h