Update renderer in core/css.

Source/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 37 matching lines @@
 CSSToLengthConversionData::FontSizes::FontSizes(const ComputedStyle* style, const ComputedStyle* rootStyle)
     : FontSizes(style->computedFontSize(), rootStyle ? rootStyle->computedFontSize() : 1.0f, &style->font())
 {
 }
 
 float CSSToLengthConversionData::FontSizes::ex() const
 {
     ASSERT(m_font);
     // FIXME: We have a bug right now where the zoom will be applied twice to EX units.
     // We really need to compute EX using fontMetrics for the original specifiedSize and not use
-    // our actual constructed rendering font.
+    // our actual constructed layoutObject font.
     if (!m_font->fontMetrics().hasXHeight())
         return m_em / 2.0f;
     return m_font->fontMetrics().xHeight();
 }
 
 float CSSToLengthConversionData::FontSizes::ch() const
 {
     ASSERT(m_font);
     return m_font->fontMetrics().zeroWidth();
 }
@@ skipping 33 matching lines @@
     m_style->setHasViewportUnits();
     return std::min(m_viewportSize.width(), m_viewportSize.height()) / 100;
 }
 double CSSToLengthConversionData::viewportMaxPercent() const
 {
     m_style->setHasViewportUnits();
     return std::max(m_viewportSize.width(), m_viewportSize.height()) / 100;
 }
 
 } // namespace blink