Remove flipForWritingMode.

sky/engine/core/rendering/RenderBox.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 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.
  *
@@ skipping 501 matching lines @@
     bool isWritingModeRoot() const { return false; }
 
     bool isFlexItemIncludingDeprecated() const { return !isInline() && !isFloatingOrOutOfFlowPositioned() && parent() && parent()->isFlexibleBox(); }
 
     virtual LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override;
     virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override;
 
     virtual LayoutUnit offsetLeft() const override;
     virtual LayoutUnit offsetTop() const override;
 
-    LayoutPoint flipForWritingModeForChild(const RenderBox* child, const LayoutPoint&) const;
-    LayoutUnit flipForWritingMode(LayoutUnit position) const; // The offset is in the block direction (y for horizontal writing modes, x for vertical writing modes).
-    LayoutPoint flipForWritingMode(const LayoutPoint&) const;
-    LayoutPoint flipForWritingModeIncludingColumns(const LayoutPoint&) const;
-    LayoutSize flipForWritingMode(const LayoutSize&) const;
-    void flipForWritingMode(LayoutRect&) const;
-    FloatPoint flipForWritingMode(const FloatPoint&) const;
-    void flipForWritingMode(FloatRect&) const;
     // These represent your location relative to your container as a physical offset.
     // In layout related methods you almost always want the logical location (e.g. x() and y()).
     LayoutPoint topLeftLocation() const;
     LayoutSize topLeftLocationOffset() const;
 
     LayoutRect logicalVisualOverflowRectForPropagation(RenderStyle*) const;
     LayoutRect visualOverflowRectForPropagation(RenderStyle*) const;
     LayoutRect logicalLayoutOverflowRectForPropagation(RenderStyle*) const;
     LayoutRect layoutOverflowRectForPropagation(RenderStyle*) const;
 
@@ skipping 225 matching lines @@
         if (UNLIKELY(inlineBoxWrapper() != 0))
             deleteLineBoxWrapper();
     }
 
     ensureRareData().m_inlineBoxWrapper = boxWrapper;
 }
 
 } // namespace blink
 
 #endif // RenderBox_h