Implement the new text-size-adjust CSS property

third_party/WebKit/Source/core/css/resolver/FontBuilder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2015 Collabora Ltd. 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 314 matching lines @@
     font.update(fontSelector);
     if (!font.getFontMetrics().hasXHeight())
         return;
 
     const float sizeAdjust = fontDescription.sizeAdjust();
     float aspectValue = font.getFontMetrics().xHeight() / specifiedSize;
     float adjustedSize = (sizeAdjust / aspectValue) * specifiedSize;
     adjustedSize = getComputedSizeFromSpecifiedSize(fontDescription, style.effectiveZoom(), adjustedSize);
 
     float multiplier = style.textAutosizingMultiplier();
-    if (multiplier > 1)
-        adjustedSize = TextAutosizer::computeAutosizedFontSize(adjustedSize, multiplier);
+    adjustedSize = TextAutosizer::computeAutosizedFontSize(adjustedSize, multiplier);
     fontDescription.setAdjustedSize(adjustedSize);
 }
 
 void FontBuilder::updateComputedSize(FontDescription& fontDescription, const ComputedStyle& style)
 {
     float computedSize = getComputedSizeFromSpecifiedSize(fontDescription, style.effectiveZoom(), fontDescription.specifiedSize());
     float multiplier = style.textAutosizingMultiplier();
-    if (multiplier > 1)
-        computedSize = TextAutosizer::computeAutosizedFontSize(computedSize, multiplier);
+    computedSize = TextAutosizer::computeAutosizedFontSize(computedSize, multiplier);
     fontDescription.setComputedSize(computedSize);
 }
 
 void FontBuilder::createFont(FontSelector* fontSelector, ComputedStyle& style)
 {
     if (!m_flags)
         return;
 
     FontDescription description = style.getFontDescription();
 
@@ skipping 51 matching lines @@
     setSize(fontDescription, FontDescription::Size(FontSize::initialKeywordSize(), 0.0f, false));
     updateSpecifiedSize(fontDescription, documentStyle);
     updateComputedSize(fontDescription, documentStyle);
 
     updateOrientation(fontDescription, documentStyle);
     documentStyle.setFontDescription(fontDescription);
     documentStyle.font().update(fontSelector);
 }
 
 } // namespace blink