Remove REM units.

sky/engine/core/css/CSSToLengthConversionData.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 18 matching lines @@
  */
 
 #include "sky/engine/config.h"
 #include "sky/engine/core/css/CSSToLengthConversionData.h"
 
 #include "sky/engine/core/rendering/RenderView.h"
 #include "sky/engine/core/rendering/style/RenderStyle.h"
 
 namespace blink {
 
-CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle* style, const RenderStyle* rootStyle, const RenderView* renderView, bool computingFontSize)
+CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle* style, const RenderView* renderView, bool computingFontSize)
     : m_style(style)
-    , m_rootStyle(rootStyle)
     , m_viewportWidth(renderView ? renderView->layoutViewportWidth() : 0)
     , m_viewportHeight(renderView ? renderView->layoutViewportHeight() : 0)
     , m_computingFontSize(computingFontSize)
 {
 }
 
 double CSSToLengthConversionData::viewportWidthPercent() const
 {
     m_style->setHasViewportUnits();
     return m_viewportWidth / 100;
 }
 double CSSToLengthConversionData::viewportHeightPercent() const
 {
     m_style->setHasViewportUnits();
     return m_viewportHeight / 100;
 }
 double CSSToLengthConversionData::viewportMinPercent() const
 {
     m_style->setHasViewportUnits();
     return std::min(m_viewportWidth, m_viewportHeight) / 100;
 }
 double CSSToLengthConversionData::viewportMaxPercent() const
 {
     m_style->setHasViewportUnits();
     return std::max(m_viewportWidth, m_viewportHeight) / 100;
 }
 
 } // namespace blink