[Download Notification] Use NotificationUIManager instead of MessageCenter

chrome/browser/download/download_commands.cc

 // Copyright 2015 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_commands.h"
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/download/download_crx_util.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/download/download_prefs.h"
@@ skipping 24 matching lines @@
       return IDR_DOWNLOAD_NOTIFICATION_MENU_PAUSE;
     case RESUME:
       return IDR_DOWNLOAD_NOTIFICATION_MENU_RESUME;
     case SHOW_IN_FOLDER:
       return IDR_DOWNLOAD_NOTIFICATION_MENU_FOLDER;
     case RETRY:
     case KEEP:
       return IDR_DOWNLOAD_NOTIFICATION_MENU_DOWNLOAD;
     case DISCARD:
       return IDR_DOWNLOAD_NOTIFICATION_MENU_DELETE;
+    case CANCEL:
+      // TODO(yoshiki): This is temporary. Change the asset when prepared.
+      return IDR_DOWNLOAD_NOTIFICATION_MENU_DELETE;
     case OPEN_WHEN_COMPLETE:
     case ALWAYS_OPEN_TYPE:
     case PLATFORM_OPEN:
-    case CANCEL:
     case LEARN_MORE_SCANNING:
     case LEARN_MORE_INTERRUPTED:
       return -1;
   }
   NOTREACHED();
   return -1;
 }
 
 gfx::Image DownloadCommands::GetCommandIcon(Command command) {
   ResourceBundle& bundle = ResourceBundle::GetSharedInstance();
@@ skipping 173 matching lines @@
     is_adobe_pdf_reader_up_to_date =
         DownloadTargetDeterminer::IsAdobeReaderUpToDate();
   }
   return IsDownloadPdf() &&
          (IsAdobeReaderDefaultPDFViewer() ? is_adobe_pdf_reader_up_to_date
                                           : true);
 #elif defined(OS_MACOSX) || defined(OS_LINUX)
   return IsDownloadPdf();
 #endif
 }