Add support for the object-fit CSS property.

Source/core/css/CSSComputedStyleDeclaration.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.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 2083 matching lines @@
         case CSSPropertyMinHeight:
             // FIXME: For flex-items, min-height:auto should compute to min-content.
             if (style->minHeight().isAuto())
                 return zoomAdjustedPixelValue(0, style.get());
             return zoomAdjustedPixelValueForLength(style->minHeight(), style.get());
         case CSSPropertyMinWidth:
             // FIXME: For flex-items, min-width:auto should compute to min-content.
             if (style->minWidth().isAuto())
                 return zoomAdjustedPixelValue(0, style.get());
             return zoomAdjustedPixelValueForLength(style->minWidth(), style.get());
+        case CSSPropertyObjectFit:
+            return cssValuePool().createValue(style->objectFit());
         case CSSPropertyOpacity:
             return cssValuePool().createValue(style->opacity(), CSSPrimitiveValue::CSS_NUMBER);
         case CSSPropertyOrphans:
             if (style->hasAutoOrphans())
                 return cssValuePool().createIdentifierValue(CSSValueAuto);
             return cssValuePool().createValue(style->orphans(), CSSPrimitiveValue::CSS_NUMBER);
         case CSSPropertyOutlineColor:
             return currentColorOrValidColor(renderer, style.get(), CSSPropertyOutlineColor);
         case CSSPropertyOutlineOffset:
             return zoomAdjustedPixelValue(style->outlineOffset(), style.get());
@@ skipping 957 matching lines @@
     static const CSSPropertyID propertiesAfterSlashSeperator[3] = { CSSPropertyBackgroundSize, CSSPropertyBackgroundOrigin,
                                                                     CSSPropertyBackgroundClip };
 
     RefPtr<CSSValueList> list = CSSValueList::createSlashSeparated();
     list->append(getCSSPropertyValuesForShorthandProperties(StylePropertyShorthand(CSSPropertyBackground, propertiesBeforeSlashSeperator, WTF_ARRAY_LENGTH(propertiesBeforeSlashSeperator))));
     list->append(getCSSPropertyValuesForShorthandProperties(StylePropertyShorthand(CSSPropertyBackground, propertiesAfterSlashSeperator, WTF_ARRAY_LENGTH(propertiesAfterSlashSeperator))));
     return list.release();
 }
 
 } // namespace WebCore