Refactor dangerous download warning text generation into DownloadItemModel.

chrome/browser/ui/gtk/download/download_item_gtk.h

 // Copyright (c) 2012 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_UI_GTK_DOWNLOAD_DOWNLOAD_ITEM_GTK_H_
 #define CHROME_BROWSER_UI_GTK_DOWNLOAD_DOWNLOAD_ITEM_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 55 matching lines @@
                                gfx::Image* image);
   void OnLoadLargeIconComplete(IconManager::Handle handle,
                                gfx::Image* image);
 
   // Returns the DownloadItem model object belonging to this item.
   content::DownloadItem* get_download();
 
  private:
   friend class DownloadShelfContextMenuGtk;
 
-  // Returns true IFF the download is dangerous and unconfirmed.
-  bool IsDangerous();
-
   // Functions for controlling the progress animation.
   // Repaint the download progress.
   void UpdateDownloadProgress();
 
   // Starts a repeating timer for UpdateDownloadProgress.
   void StartDownloadProgress();
 
   // Stops the repeating timer.
   void StopDownloadProgress();
 
@@ skipping 147 matching lines @@
 
   // For canceling an in progress icon request.
   CancelableRequestConsumerT<int, 0> icon_consumer_;
 
   // Indicates when the download has completed, so we don't redo
   // on-completion actions.
   bool download_complete_;
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_DOWNLOAD_DOWNLOAD_ITEM_GTK_H_