Add CSS hyphens property behind the test flag

third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ skipping 1800 matching lines @@
             // the "height" property does not apply for non-atomic inline elements.
             if (!layoutObject->isAtomicInlineLevel() && layoutObject->isInline())
                 return cssValuePool().createIdentifierValue(CSSValueAuto);
             return zoomAdjustedPixelValue(sizingBox(layoutObject).height(), style);
         }
         return zoomAdjustedPixelValueForLength(style.height(), style);
     case CSSPropertyWebkitHighlight:
         if (style.highlight() == nullAtom)
             return cssValuePool().createIdentifierValue(CSSValueNone);
         return CSSStringValue::create(style.highlight());
+    case CSSPropertyHyphens:
+        return cssValuePool().createValue(style.getHyphens());
     case CSSPropertyWebkitHyphenateCharacter:
         if (style.hyphenationString().isNull())
             return cssValuePool().createIdentifierValue(CSSValueAuto);
         return CSSStringValue::create(style.hyphenationString());
     case CSSPropertyImageRendering:
         return CSSPrimitiveValue::create(style.imageRendering());
     case CSSPropertyImageOrientation:
         if (style.respectImageOrientation() == RespectImageOrientation)
             return cssValuePool().createIdentifierValue(CSSValueFromImage);
         return cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Degrees);
@@ skipping 1004 matching lines @@
     case CSSPropertyAll:
         return nullptr;
     default:
         break;
     }
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
 } // namespace blink