Add "Remove from list" for download item in the 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 37 matching lines @@
     case SHOW_IN_FOLDER:
       return l10n_util::GetString(IDS_DOWNLOAD_LINK_SHOW);
     case OPEN_WHEN_COMPLETE:
       if (download_->state() == DownloadItem::IN_PROGRESS)
         return l10n_util::GetString(IDS_DOWNLOAD_MENU_OPEN_WHEN_COMPLETE);
       return l10n_util::GetString(IDS_DOWNLOAD_MENU_OPEN);
     case ALWAYS_OPEN_TYPE:
       return l10n_util::GetString(IDS_DOWNLOAD_MENU_ALWAYS_OPEN_TYPE);
     case CANCEL:
       return l10n_util::GetString(IDS_DOWNLOAD_MENU_CANCEL);
+    case REMOVE_ITEM:
+      return l10n_util::GetString(IDS_DOWNLOAD_MENU_REMOVE_ITEM);
     default:
       NOTREACHED();
   }
   return std::wstring();
 }
 
 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;
     default:
       return id > 0 && id < MENU_LAST;
   }
 }
 
 void DownloadShelfContextMenu::ExecuteItemCommand(int id) {
   switch (id) {
     case SHOW_IN_FOLDER:
       download_->manager()->ShowDownloadInShell(download_);
       break;
     case OPEN_WHEN_COMPLETE:
       download_util::OpenDownload(download_);
       break;
     case ALWAYS_OPEN_TYPE: {
       const FilePath::StringType extension =
           file_util::GetFileExtensionFromPath(download_->full_path());
       download_->manager()->OpenFilesOfExtension(
           extension, !ItemIsChecked(ALWAYS_OPEN_TYPE));
       break;
     }
     case CANCEL:
       model_->CancelTask();
       break;
+    case REMOVE_ITEM:
+      download_->Remove(false);
+      break;
     default:
       NOTREACHED();
   }
 }