Pack StyleColor members in StyleRareInheritedData tighter to save memory

Source/core/rendering/style/RenderStyle.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 644 matching lines @@
             || hasWillChangeCompositingHint() != other->hasWillChangeCompositingHint()
             || hasWillChangeGpuRasterizationHint() != other->hasWillChangeGpuRasterizationHint())
             return StyleDifferenceRecompositeLayer;
     }
 
     if (inherited->color != other->inherited->color
         || inherited_flags._text_decorations != other->inherited_flags._text_decorations
         || visual->textDecoration != other->visual->textDecoration
         || rareNonInheritedData->m_textDecorationStyle != other->rareNonInheritedData->m_textDecorationStyle
         || rareNonInheritedData->m_textDecorationColor != other->rareNonInheritedData->m_textDecorationColor
-        || rareInheritedData->textFillColor != other->rareInheritedData->textFillColor
-        || rareInheritedData->textStrokeColor != other->rareInheritedData->textStrokeColor
-        || rareInheritedData->textEmphasisColor != other->rareInheritedData->textEmphasisColor
+        || rareInheritedData->textFillColor() != other->rareInheritedData->textFillColor()
+        || rareInheritedData->textStrokeColor() != other->rareInheritedData->textStrokeColor()
+        || rareInheritedData->textEmphasisColor() != other->rareInheritedData->textEmphasisColor()
         || rareInheritedData->textEmphasisFill != other->rareInheritedData->textEmphasisFill)
         return StyleDifferenceRepaintIfTextOrColorChange;
 
     // Cursors are not checked, since they will be set appropriately in response to mouse events,
     // so they don't need to cause any repaint or layout.
 
     // Animations don't need to be checked either.  We always set the new style on the RenderObject, so we will get a chance to fire off
     // the resulting transition properly.
     return StyleDifferenceEqual;
 }
@@ skipping 977 matching lines @@
     // right
     radiiSum = radii.topRight().height() + radii.bottomRight().height();
     if (radiiSum > rect.height())
         factor = std::min(rect.height() / radiiSum, factor);
 
     ASSERT(factor <= 1);
     return factor;
 }
 
 } // namespace WebCore