Add plumbing for font-stretch

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 114 matching lines @@
             if (!shorthandPropertyID)
                 shorthandPropertyID = borderFallbackShorthandProperty;
             break;
         case CSSPropertyWebkitBorderHorizontalSpacing:
         case CSSPropertyWebkitBorderVerticalSpacing:
             shorthandPropertyID = CSSPropertyBorderSpacing;
             break;
         case CSSPropertyFontFamily:
         case CSSPropertyLineHeight:
         case CSSPropertyFontSize:
+        case CSSPropertyFontStretch:
         case CSSPropertyFontStyle:
         case CSSPropertyFontVariant:
         case CSSPropertyFontWeight:
             // Don't use CSSPropertyFont because old UAs can't recognize them but are important for editing.
             break;
         case CSSPropertyListStyleType:
         case CSSPropertyListStylePosition:
         case CSSPropertyListStyleImage:
             shorthandPropertyID = CSSPropertyListStyle;
             break;
@@ skipping 214 matching lines @@
     if (m_propertySet.propertyAt(foundPropertyIndex).isImplicit()) {
         commonValue = String();
         return;
     }
 
     char prefix = '\0';
     switch (propertyID) {
     case CSSPropertyFontStyle:
         break; // No prefix.
     case CSSPropertyFontFamily:
+    case CSSPropertyFontStretch:
     case CSSPropertyFontVariant:
     case CSSPropertyFontWeight:
         prefix = ' ';
         break;
     case CSSPropertyLineHeight:
         prefix = '/';
         break;
     default:
         ASSERT_NOT_REACHED();
     }
@@ skipping 16 matching lines @@
     StylePropertySet::PropertyReference fontSizeProperty = m_propertySet.propertyAt(fontSizePropertyIndex);
     StylePropertySet::PropertyReference fontFamilyProperty = m_propertySet.propertyAt(fontFamilyPropertyIndex);
     if (fontSizeProperty.isImplicit() || fontFamilyProperty.isImplicit())
         return emptyString();
 
     String commonValue = fontSizeProperty.value()->cssText();
     StringBuilder result;
     appendFontLonghandValueIfExplicit(CSSPropertyFontStyle, result, commonValue);
     appendFontLonghandValueIfExplicit(CSSPropertyFontVariant, result, commonValue);
     appendFontLonghandValueIfExplicit(CSSPropertyFontWeight, result, commonValue);
+    appendFontLonghandValueIfExplicit(CSSPropertyFontStretch, result, commonValue);
     if (!result.isEmpty())
         result.append(' ');
     result.append(fontSizeProperty.value()->cssText());
     appendFontLonghandValueIfExplicit(CSSPropertyLineHeight, result, commonValue);
     if (!result.isEmpty())
         result.append(' ');
     result.append(fontFamilyProperty.value()->cssText());
     if (isInitialOrInherit(commonValue))
         return commonValue;
     return result.toString();
@@ skipping 427 matching lines @@
             isInitialValue = false;
         if (!value->isInheritedValue())
             isInheritedValue = false;
         if (isImportant != m_propertySet.propertyIsImportant(shorthand.properties()[i]))
             return false;
     }
     return isInitialValue || isInheritedValue;
 }
 
 }