Make calls to AtomicString(const String&) explicit in css/

Source/core/css/resolver/FontBuilder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. 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 161 matching lines @@
     scope.fontDescription().setGenericFamily(FontDescription::NoFamily);
 
     for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
         CSSValue* item = i.value();
         if (!item->isPrimitiveValue())
             continue;
         CSSPrimitiveValue* contentValue = toCSSPrimitiveValue(item);
         AtomicString face;
         Settings* settings = m_document->settings();
         if (contentValue->isString()) {
-            face = contentValue->getStringValue();
+            face = AtomicString(contentValue->getStringValue());
         } else if (settings) {
             switch (contentValue->getValueID()) {
             case CSSValueWebkitBody:
                 face = settings->genericFontFamilySettings().standard();
                 break;
             case CSSValueSerif:
                 face = FontFamilyNames::webkit_serif;
                 scope.fontDescription().setGenericFamily(FontDescription::SerifFamily);
                 break;
             case CSSValueSansSerif:
@@ skipping 467 matching lines @@
     FontOrientation fontOrientation;
     NonCJKGlyphOrientation glyphOrientation;
     getFontAndGlyphOrientation(documentStyle, fontOrientation, glyphOrientation);
     fontDescription.setOrientation(fontOrientation);
     fontDescription.setNonCJKGlyphOrientation(glyphOrientation);
     documentStyle->setFontDescription(fontDescription);
     documentStyle->font().update(fontSelector);
 }
 
 }