Revert of Fix null dereference on MemoryCache.

third_party/WebKit/Source/core/css/CSSImageValue.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef CSSImageValue_h
 #define CSSImageValue_h
 
-#include "core/CoreExport.h"
 #include "core/css/CSSValue.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "platform/weborigin/Referrer.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class Document;
 class KURL;
 class StyleFetchedImage;
 class StyleImage;
 class LayoutObject;
 
-class CORE_EXPORT CSSImageValue : public CSSValue {
+class CSSImageValue : public CSSValue {
 public:
     static PassRefPtrWillBeRawPtr<CSSImageValue> create(const KURL& url, StyleFetchedImage* image = 0)
     {
         return create(url.string(), url, image);
     }
     static PassRefPtrWillBeRawPtr<CSSImageValue> create(const String& rawValue, const KURL& url, StyleFetchedImage* image = 0)
     {
         return create(AtomicString(rawValue), url, image);
     }
     static PassRefPtrWillBeRawPtr<CSSImageValue> create(const AtomicString& rawValue, const KURL& url, StyleFetchedImage* image = 0)
@@ skipping 41 matching lines @@
     bool m_isCachePending;
     RefPtrWillBeMember<StyleFetchedImage> m_cachedImage;
     AtomicString m_initiatorName;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSImageValue, isImageValue());
 
 } // namespace blink
 
 #endif // CSSImageValue_h