Allow cancellable download items to be removable from download shelf....

chrome/browser/download/download_shelf.cc

 // 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.
 
 #include "chrome/browser/download/download_shelf.h"
 
 #include "app/l10n_util.h"
 #include "base/file_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/dom_ui/downloads_ui.h"
@@ skipping 55 matching lines @@
 bool DownloadShelfContextMenu::IsItemCommandEnabled(int id) const {
   switch (id) {
     case SHOW_IN_FOLDER:
     case OPEN_WHEN_COMPLETE:
       return download_->state() != DownloadItem::CANCELLED;
     case ALWAYS_OPEN_TYPE:
       return download_util::CanOpenDownload(download_);
     case CANCEL:
       return download_->state() == DownloadItem::IN_PROGRESS;
     case REMOVE_ITEM:
-      return download_->state() == DownloadItem::COMPLETE;
+      return download_->state() == DownloadItem::COMPLETE ||
+          download_->state() == DownloadItem::CANCELLED;
     default:
       return id > 0 && id < MENU_LAST;
   }
 }
 
 void DownloadShelfContextMenu::ExecuteItemCommand(int id) {
   switch (id) {
     case SHOW_IN_FOLDER:
       download_->manager()->ShowDownloadInShell(download_);
       break;
@@ skipping 10 matching lines @@
     case CANCEL:
       model_->CancelTask();
       break;
     case REMOVE_ITEM:
       download_->Remove(false);
       break;
     default:
       NOTREACHED();
   }
 }