Remove an instance of isPropertyImplicit from StylePropertySerializer.cpp.

Source/core/css/StylePropertySerializer.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. 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 714 matching lines @@
         return commonValue->cssText();
 
     return result.toString();
 }
 
 String StylePropertySerializer::getShorthandValue(const StylePropertyShorthand& shorthand, String separator) const
 {
     String commonValue;
     StringBuilder result;
     for (unsigned i = 0; i < shorthand.length(); ++i) {
-        if (!m_propertySet.isPropertyImplicit(shorthand.properties()[i])) {
-            const CSSValue* value = m_propertySet.getPropertyCSSValue(shorthand.properties()[i]);
-            if (!value)
-                return String();
-            String valueText = value->cssText();
-            if (!i)
-                commonValue = valueText;
-            else if (!commonValue.isNull() && commonValue != valueText)
-                commonValue = String();
-            if (value->isInitialValue())
-                continue;
-            if (!result.isEmpty())
-                result.append(separator);
-            result.append(valueText);
-        } else
+        const CSSValue* value = m_propertySet.getPropertyCSSValue(shorthand.properties()[i]);
+        if (!value)
+            return String();
+        String valueText = value->cssText();
+        if (!i)
+            commonValue = valueText;
+        else if (!commonValue.isNull() && commonValue != valueText)
             commonValue = String();
+        if (value->isInitialValue())
+            continue;
+        if (!result.isEmpty())
+            result.append(separator);
+        result.append(valueText);
     }
     if (isInitialOrInherit(commonValue))
         return commonValue;
-    if (result.isEmpty())
-        return String();
     return result.toString();
 }
 
 // only returns a non-null value if all properties have the same, non-null value
 String StylePropertySerializer::getCommonValue(const StylePropertyShorthand& shorthand) const
 {
     String res;
     bool lastPropertyWasImportant = false;
     for (unsigned i = 0; i < shorthand.length(); ++i) {
         const CSSValue* value = m_propertySet.getPropertyCSSValue(shorthand.properties()[i]);
@@ skipping 203 matching lines @@
             isInitialValue = false;
         if (!value->isInheritedValue())
             isInheritedValue = false;
         if (isImportant != m_propertySet.propertyIsImportant(shorthand.properties()[i]))
             return false;
     }
     return isInitialValue || isInheritedValue;
 }
 
 }