Revert of Fix null dereference on MemoryCache.

third_party/WebKit/Source/core/fetch/StyleSheetResource.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef StyleSheetResource_h
 #define StyleSheetResource_h
 
-#include "core/CoreExport.h"
 #include "core/fetch/TextResource.h"
 
 namespace blink {
 
 class StyleSheetResourceClient;
 
-class CORE_EXPORT StyleSheetResource : public TextResource {
+class StyleSheetResource : public TextResource {
 public:
     typedef StyleSheetResourceClient ClientType;
 
     StyleSheetResource(const ResourceRequest& request, Type type, const String& mimeType, const String& charset)
         : TextResource(request, type, mimeType, charset)
     { }
 };
 
 }
 
 #endif