Optimize for horizontal writing mode

Source/core/rendering/style/RenderStyle.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 918 matching lines @@
     bool isRunningAnimationOnCompositor() { return isRunningOpacityAnimationOnCompositor() || isRunningTransformAnimationOnCompositor() || isRunningFilterAnimationOnCompositor(); }
 
     LineBoxContain lineBoxContain() const { return rareInheritedData->m_lineBoxContain; }
     const LineClampValue& lineClamp() const { return rareNonInheritedData->lineClamp; }
     Color tapHighlightColor() const { return rareInheritedData->tapHighlightColor; }
     ETextSecurity textSecurity() const { return static_cast<ETextSecurity>(rareInheritedData->textSecurity); }
 
     WritingMode writingMode() const { return static_cast<WritingMode>(inherited_flags.m_writingMode); }
     bool isHorizontalWritingMode() const { return blink::isHorizontalWritingMode(writingMode()); }
     bool isFlippedLinesWritingMode() const { return blink::isFlippedLinesWritingMode(writingMode()); }
-    bool isFlippedBlocksWritingMode() const { return blink::isFlippedBlocksWritingMode(writingMode()); }
+    bool slowIsFlippedBlocksWritingMode() const { return blink::isFlippedBlocksWritingMode(writingMode()); }
 
     EImageRendering imageRendering() const { return static_cast<EImageRendering>(rareInheritedData->m_imageRendering); }
 
     ESpeak speak() const { return static_cast<ESpeak>(rareInheritedData->speak); }
 
     FilterOperations& mutableFilter() { return rareNonInheritedData.access()->m_filter.access()->m_operations; }
     const FilterOperations& filter() const { return rareNonInheritedData->m_filter->m_operations; }
     bool hasFilter() const { return !rareNonInheritedData->m_filter->m_operations.operations().isEmpty(); }
 
     WebBlendMode blendMode() const;
@@ skipping 968 matching lines @@
 inline bool RenderStyle::hasPseudoElementStyle() const
 {
     return noninherited_flags.pseudoBits & PSEUDO_ELEMENT_MASK;
 }
 
 float calcBorderRadiiConstraintScaleFor(const FloatRect&, const FloatRoundedRect::Radii&);
 
 } // namespace blink
 
 #endif // RenderStyle_h