Use the runtime flag and remove '-webkit-' prefix for CSS3 text-indent.

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 2235 matching lines @@
             case TextEmphasisMarkTriangle:
             case TextEmphasisMarkSesame: {
                 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
                 list->append(cssValuePool().createValue(style->textEmphasisFill()));
                 list->append(cssValuePool().createValue(style->textEmphasisMark()));
                 return list.release();
             }
             }
         case CSSPropertyTextIndent: {
             RefPtr<CSSValue> textIndent = zoomAdjustedPixelValueForLength(style->textIndent(), style.get());
-#if ENABLE(CSS3_TEXT)
-            if (style->textIndentLine() == TextIndentEachLine) {
+            if (RuntimeEnabledFeatures::css3TextEnabled() && style->textIndentLine() == TextIndentEachLine) {

[Julien - ping for review, 2013/08/21 23:54:50]

Let's keep in mind that we would like to test this once we have a test suite for
stable behavior (which should be today or tomorrow).

                 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
                 list->append(textIndent.release());
-                list->append(cssValuePool().createIdentifierValue(CSSValueWebkitEachLine));
+                list->append(cssValuePool().createIdentifierValue(CSSValueEachLine));
                 return list.release();
             }
-#endif
             return textIndent.release();
         }
         case CSSPropertyTextShadow:
             return valueForShadow(renderer, style->textShadow(), propertyID, style.get());
         case CSSPropertyTextRendering:
             return cssValuePool().createValue(style->fontDescription().textRenderingMode());
         case CSSPropertyTextOverflow:
             if (style->textOverflow())
                 return cssValuePool().createIdentifierValue(CSSValueEllipsis);
             return cssValuePool().createIdentifierValue(CSSValueClip);
@@ skipping 888 matching lines @@
     static const CSSPropertyID propertiesAfterSlashSeperator[3] = { CSSPropertyBackgroundSize, CSSPropertyBackgroundOrigin,
                                                                     CSSPropertyBackgroundClip };
 
     RefPtr<CSSValueList> list = CSSValueList::createSlashSeparated();
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesBeforeSlashSeperator, WTF_ARRAY_LENGTH(propertiesBeforeSlashSeperator))));
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesAfterSlashSeperator, WTF_ARRAY_LENGTH(propertiesAfterSlashSeperator))));
     return list.release();
 }
 
 } // namespace WebCore