Convert IconManager to use new CancelableTaskTracker

chrome/browser/ui/views/download/download_item_view.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.
 //
 // A ChromeView that implements one download on the Download shelf.
 // Each DownloadItemView contains an application icon, a text label
 // indicating the download's file name, a text label indicating the
 // download's status (such as the number of bytes downloaded so far)
 // and a button for canceling an in progress download, or opening
 // the completed download.
@@ skipping 51 matching lines @@
                    DownloadShelfView* parent,
                    DownloadItemModel* model);
   virtual ~DownloadItemView();
 
   // Timer callback for handling animations
   void UpdateDownloadProgress();
   void StartDownloadProgress();
   void StopDownloadProgress();
 
   // IconManager::Client interface.
-  void OnExtractIconComplete(IconManager::Handle handle, gfx::Image* icon);
+  void OnExtractIconComplete(gfx::Image* icon);
 
   // Returns the DownloadItem model object belonging to this item.
   content::DownloadItem* download() const { return download_; }
 
   // DownloadItem::Observer methods
   virtual void OnDownloadUpdated(content::DownloadItem* download) OVERRIDE;
   virtual void OnDownloadOpened(content::DownloadItem* download) OVERRIDE;
   virtual void OnDownloadDestroyed(content::DownloadItem* download) OVERRIDE;
 
   // Overridden from views::View:
@@ skipping 191 matching lines @@
   // Whether we are dragging the download button.
   bool dragging_;
 
   // Whether we are tracking a possible drag.
   bool starting_drag_;
 
   // Position that a possible drag started at.
   gfx::Point drag_start_point_;
 
   // For canceling an in progress icon request.
-  CancelableRequestConsumerT<int, 0> icon_consumer_;
+  CancelableTaskTracker cancelable_task_tracker_;
 
   // A model class to control the status text we display and the cancel
   // behavior.
   // This class owns the pointer.
   scoped_ptr<DownloadItemModel> model_;
 
   // Hover animations for our body and drop buttons.
   scoped_ptr<ui::SlideAnimation> body_hover_animation_;
   scoped_ptr<ui::SlideAnimation> drop_hover_animation_;
 
@@ skipping 34 matching lines @@
 
   // The icon loaded in the download shelf is based on the file path of the
   // item.  Store the path used, so that we can detect a change in the path
   // and reload the icon.
   FilePath last_download_item_path_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItemView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_ITEM_VIEW_H__