Add IndexedDBValue wrapper class to group blob info with bits.

content/browser/indexed_db/indexed_db_blob_info.h

 // Copyright 2014 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_INDEXED_DB_INDEXED_DB_BLOB_INFO_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BLOB_INFO_H_
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/time/time.h"
+#include "content/common/content_export.h"
 #include "webkit/common/blob/shareable_file_reference.h"
 
 namespace content {
 
-class IndexedDBBlobInfo {
+class CONTENT_EXPORT IndexedDBBlobInfo {
  public:
   typedef webkit_blob::ShareableFileReference::FinalReleaseCallback
       ReleaseCallback;
   IndexedDBBlobInfo();
   ~IndexedDBBlobInfo();
   // These two are used for Blobs.
   IndexedDBBlobInfo(const std::string& uuid,
                     const base::string16& type,
                     int64 size);
   IndexedDBBlobInfo(const base::string16& type, int64 size, int64 key);
@@ skipping 37 matching lines @@
 
   // Valid only when this comes out of the database.
   int64 key_;
   base::Closure mark_used_callback_;
   ReleaseCallback release_callback_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BLOB_INFO_H_