build blob as a component

webkit/blob/deletable_file_reference.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 WEBKIT_BLOB_DELETABLE_FILE_REFERENCE_H_
 #define WEBKIT_BLOB_DELETABLE_FILE_REFERENCE_H_
 #pragma once
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
+#include "webkit/blob/blob_export.h"
 
 namespace base {
 class MessageLoopProxy;
 }
 
 namespace webkit_blob {
 
 // A refcounted wrapper around a FilePath that schedules the file
 // to be deleted upon final release.
-class DeletableFileReference : public base::RefCounted<DeletableFileReference> {
+class BLOB_EXPORT DeletableFileReference :
+    public base::RefCounted<DeletableFileReference> {
  public:
   typedef base::Callback<void(const FilePath&)> DeletionCallback;
 
   // Returns a DeletableFileReference for the given path, if no reference
   // for this path exists returns NULL.
   static scoped_refptr<DeletableFileReference> Get(const FilePath& path);
 
   // Returns a DeletableFileReference for the given path, creating a new
   // reference if none yet exists.
   static scoped_refptr<DeletableFileReference> GetOrCreate(
@@ skipping 15 matching lines @@
   scoped_refptr<base::MessageLoopProxy> file_thread_;
 
   std::vector<DeletionCallback> deletion_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(DeletableFileReference);
 };
 
 }  // namespace webkit_blob
 
 #endif  // BASE_DELETABLE_FILE_REFERENCE_H_