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diff --git a/chrome/browser/cocoa/download_item_mac.h b/chrome/browser/cocoa/download_item_mac.h
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+++ b/chrome/browser/cocoa/download_item_mac.h
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+// Copyright (c) 2009 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 CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_MAC_H_
+#define CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_MAC_H_
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/scoped_nsobject.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/download/download_manager.h"
+
+class BaseDownloadItemModel;
+@class DownloadShelfController;
+@class DownloadShelfContextMenuBridge;
+
+
+// A class that bridges the visible mac download items to chromium's
+// download model.
+
+class DownloadItemMac : DownloadItem::Observer {
+ public:
+  // DownloadItemMac takes ownership of |download_item_model|.
+  DownloadItemMac(BaseDownloadItemModel* download_item_model,
+                  NSRect frame,
+                  DownloadShelfController* parent);
+
+  // Destructor.
+  ~DownloadItemMac();
+
+  // DownloadItem::Observer implementation
+  virtual void OnDownloadUpdated(DownloadItem* download);
+  virtual void OnDownloadOpened(DownloadItem* download) { }
+
+ private:
+  // The download item model we represent.
+  scoped_ptr<BaseDownloadItemModel> download_model_;
+
+  // Our parent view
+  DownloadShelfController* parent_;  // weak
+
+  // Context menu
+  scoped_nsobject<DownloadShelfContextMenuBridge> menu_;
+};
+
+#endif  // CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_MAC_H_