[Downloads] Ask DownloadHistory if a download was from history.

chrome/browser/download/download_item_model.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_DOWNLOAD_DOWNLOAD_ITEM_MODEL_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_MODEL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 99 matching lines @@
 
   // Returns |true| if this download should be displayed in the downloads shelf.
   bool ShouldShowInShelf() const;
 
   // Change whether the download should be displayed on the downloads
   // shelf. Setting this is only effective if the download hasn't already been
   // displayed in the shelf.
   void SetShouldShowInShelf(bool should_show);
 
   // Returns |true| if the UI should be notified when the download is ready to
-  // be presented in the UI. By default, this value is |false| and should be
-  // changed explicitly using SetShouldNotifyUI(). Note that this is indpendent
-  // of ShouldShowInShelf() since there might be actions other than showing in
-  // the shelf that the UI must perform.
+  // be presented in the UI. Note that this is indpendent of ShouldShowInShelf()
+  // since there might be actions other than showing in the shelf that the UI
+  // must perform.
   bool ShouldNotifyUI() const;
 
-  // Change what's returned by ShouldNotifyUI().
-  void SetShouldNotifyUI(bool should_notify);
+  // Returns |true| if the UI has been notified about this download. By default,
+  // this value is |false| and should be changed explicitly using
+  // SetWasUINotified().
+  bool WasUINotified() const;
+
+  // Change what's returned by WasUINotified().
+  void SetWasUINotified(bool should_notify);
 
   // Returns |true| if opening in the browser is preferred for this download. If
   // |false|, the download should be opened with the system default application.
   bool ShouldPreferOpeningInBrowser() const;
 
   // Change what's returned by ShouldPreferOpeningInBrowser to |preference|.
   void SetShouldPreferOpeningInBrowser(bool preference);
 
   // Open the download using the platform handler for the download. The behavior
   // of this method will be different from DownloadItem::OpenDownload() if
@@ skipping 15 matching lines @@
 
   // The DownloadItem that this model represents. Note that DownloadItemModel
   // itself shouldn't maintain any state since there can be more than one
   // DownloadItemModel in use with the same DownloadItem.
   content::DownloadItem* download_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItemModel);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_MODEL_H_