prune down content_dll change to just the CONTENT_EXPORTS

content/browser/chrome_blob_storage_context.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_CHROME_BLOB_STORAGE_CONTEXT_H_
 #define CONTENT_BROWSER_CHROME_BLOB_STORAGE_CONTEXT_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/browser_thread.h"
+#include "content/common/content_export.h"
 
 class GURL;
 
 namespace webkit_blob {
 class BlobStorageController;
 }
 
 // A context class that keeps track of BlobStorageController used by the chrome.
 // There is an instance associated with each BrowserContext. There could be
 // multiple URLRequestContexts in the same browser context that refers to the
 // same instance.
 //
 // All methods, except the ctor, are expected to be called on
 // the IO thread (unless specifically called out in doc comments).
-class ChromeBlobStorageContext
+class CONTENT_EXPORT ChromeBlobStorageContext
     : public base::RefCountedThreadSafe<ChromeBlobStorageContext,
                                         BrowserThread::DeleteOnIOThread> {
  public:
   ChromeBlobStorageContext();
 
   void InitializeOnIOThread();
 
   webkit_blob::BlobStorageController* controller() const {
     return controller_.get();
   }
 
  private:
+  friend class base::RefCountedThreadSafe<ChromeBlobStorageContext,
+                                          BrowserThread::DeleteOnIOThread>;
   friend class BrowserThread;
   friend class DeleteTask<ChromeBlobStorageContext>;
 
   virtual ~ChromeBlobStorageContext();
 
   scoped_ptr<webkit_blob::BlobStorageController> controller_;
 };
 
 #endif  // CONTENT_BROWSER_CHROME_BLOB_STORAGE_CONTEXT_H_