Add "Remove from list" for each download in domui page....

chrome/browser/dom_ui/downloads_dom_handler.h

 // Copyright (c) 2006-2009 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_DOM_UI_DOWNLOADS_DOM_HANDLER_H_
 #define CHROME_BROWSER_DOM_UI_DOWNLOADS_DOM_HANDLER_H_
 
 #include <vector>
 
 #include "chrome/browser/dom_ui/dom_ui.h"
@@ skipping 40 matching lines @@
   // Callback for the "discardDangerous" message - specifies that the user
   // wishes to discard (remove) a dangerous file.
   void HandleDiscardDangerous(const Value* value);
 
   // Callback for the "show" message - shows the file in explorer.
   void HandleShow(const Value* value);
 
   // Callback for the "pause" message - pauses the file download.
   void HandlePause(const Value* value);
 
+  // Callback for the "remove" message - removes the file download from shelf
+  // and list.
+  void HandleRemove(const Value* value);
+
   // Callback for the "cancel" message - cancels the download.
   void HandleCancel(const Value* value);
 
   // Callback for the "clearAll" message - clears all the downloads.
   void HandleClearAll(const Value* value);
 
  private:
   // Send the current list of downloads to the page.
   void SendCurrentDownloads();
 
@@ skipping 22 matching lines @@
   // The current set of visible DownloadItems for this view received from the
   // DownloadManager. DownloadManager owns the DownloadItems. The vector is
   // kept in order, sorted by ascending start time.
   typedef std::vector<DownloadItem*> OrderedDownloads;
   OrderedDownloads download_items_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadsDOMHandler);
 };
 
 #endif // CHROME_BROWSER_DOM_UI_DOWNLOADS_DOM_HANDLER_H_