prune down content_dll change to just the CONTENT_EXPORTS

content/browser/in_process_webkit/session_storage_namespace.h

Index: content/browser/in_process_webkit/session_storage_namespace.h
diff --git a/content/browser/in_process_webkit/session_storage_namespace.h b/content/browser/in_process_webkit/session_storage_namespace.h
index b801bc26c317d9f94e2bad8423bb3de677baf5d1..47e6f3258229840694c6a56968b3344c82429c35 100644
--- a/content/browser/in_process_webkit/session_storage_namespace.h
+++ b/content/browser/in_process_webkit/session_storage_namespace.h
@@ -8,6 +8,7 @@
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
+#include "content/common/content_export.h"
 
 class WebKitContext;
 
@@ -32,7 +33,7 @@ class SessionStorageNamespace
   SessionStorageNamespace(WebKitContext* webkit_context, int64 id);
 
   friend class base::RefCountedThreadSafe<SessionStorageNamespace>;
-  ~SessionStorageNamespace();
+  CONTENT_EXPORT ~SessionStorageNamespace();
 
   scoped_refptr<WebKitContext> webkit_context_;