Fix changes in the snap-height property to invalidate layout

third_party/WebKit/Source/core/style/ComputedStyle.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. 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 565 matching lines @@
             || rareInheritedData->m_respectImageOrientation != other.rareInheritedData->m_respectImageOrientation
             || rareInheritedData->m_rubyPosition != other.rareInheritedData->m_rubyPosition
             || rareInheritedData->textEmphasisMark != other.rareInheritedData->textEmphasisMark
             || rareInheritedData->textEmphasisPosition != other.rareInheritedData->textEmphasisPosition
             || rareInheritedData->textEmphasisCustomMark != other.rareInheritedData->textEmphasisCustomMark
             || rareInheritedData->m_textJustify != other.rareInheritedData->m_textJustify
             || rareInheritedData->m_textOrientation != other.rareInheritedData->m_textOrientation
             || rareInheritedData->m_textCombine != other.rareInheritedData->m_textCombine
             || rareInheritedData->m_tabSize != other.rareInheritedData->m_tabSize
             || rareInheritedData->listStyleImage != other.rareInheritedData->listStyleImage
+            || rareInheritedData->m_snapHeightUnit != other.rareInheritedData->m_snapHeightUnit
+            || rareInheritedData->m_snapHeightPosition != other.rareInheritedData->m_snapHeightPosition
             || rareInheritedData->textStrokeWidth != other.rareInheritedData->textStrokeWidth)
             return true;
 
         if (!rareInheritedData->shadowDataEquivalent(*other.rareInheritedData.get()))
             return true;
 
         if (!rareInheritedData->quotesDataEquivalent(*other.rareInheritedData.get()))
             return true;
     }
 
@@ skipping 1278 matching lines @@
     if (!shadowList)
         return false;
     for (size_t i = shadowList->shadows().size(); i--; ) {
         if (shadowList->shadows()[i].color().isCurrentColor())
             return true;
     }
     return false;
 }
 
 } // namespace blink