| Index: components/sync/engine/attachments/attachment_downloader.h
 | 
| diff --git a/components/sync/engine/attachments/attachment_downloader.h b/components/sync/engine/attachments/attachment_downloader.h
 | 
| index 80e82a418b74b667893b90198609fca3bec58c4c..71b61c6371f2fad2ad160e8e034a5958aaeb0794 100644
 | 
| --- a/components/sync/engine/attachments/attachment_downloader.h
 | 
| +++ b/components/sync/engine/attachments/attachment_downloader.h
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| @@ -30,9 +30,8 @@ class AttachmentDownloader {
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|      DOWNLOAD_UNSPECIFIED_ERROR,  // An unspecified error occurred.
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|    };
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|  
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| -  typedef base::Callback<void(const DownloadResult&,
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| -                              std::unique_ptr<Attachment>)>
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| -      DownloadCallback;
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| +  using DownloadCallback =
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| +      base::Callback<void(const DownloadResult&, std::unique_ptr<Attachment>)>;
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|  
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|    virtual ~AttachmentDownloader();
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|  
 | 
| 
 |