Detect removed files and reflect the state in chrome://downloads and the download shelf

chrome/browser/ui/webui/downloads_ui.cc

 // Copyright (c) 2011 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/ui/webui/downloads_ui.h"
 
 #include "base/memory/singleton.h"
 #include "base/string_piece.h"
 #include "base/threading/thread.h"
 #include "base/values.h"
@@ skipping 45 matching lines @@
     : ChromeWebUIDataSource(chrome::kChromeUIDownloadsHost) {
   AddLocalizedString("title", IDS_DOWNLOAD_TITLE);
   AddLocalizedString("searchbutton", IDS_DOWNLOAD_SEARCH_BUTTON);
   AddLocalizedString("no_results", IDS_DOWNLOAD_SEARCH_BUTTON);
   AddLocalizedString("searchresultsfor", IDS_DOWNLOAD_SEARCHRESULTSFOR);
   AddLocalizedString("downloads", IDS_DOWNLOAD_TITLE);
   AddLocalizedString("clear_all", IDS_DOWNLOAD_LINK_CLEAR_ALL);
 
   // Status.
   AddLocalizedString("status_cancelled", IDS_DOWNLOAD_TAB_CANCELED);
+  AddLocalizedString("status_removed", IDS_DOWNLOAD_FILE_REMOVED);
   AddLocalizedString("status_paused", IDS_DOWNLOAD_PROGRESS_PAUSED);
   AddLocalizedString("status_interrupted", IDS_DOWNLOAD_PROGRESS_INTERRUPTED);
 
   // Dangerous file.
   AddLocalizedString("danger_file_desc", IDS_PROMPT_DANGEROUS_DOWNLOAD);
   AddLocalizedString("danger_url_desc", IDS_PROMPT_UNSAFE_DOWNLOAD_URL);
   AddLocalizedString("danger_save", IDS_CONFIRM_DOWNLOAD);
   AddLocalizedString("danger_discard", IDS_DISCARD_DOWNLOAD);
 
   // Controls.
@@ skipping 45 matching lines @@
 
   // Set up the chrome://downloads/ source.
   contents->profile()->GetChromeURLDataManager()->AddDataSource(html_source);
 }
 
 // static
 RefCountedMemory* DownloadsUI::GetFaviconResourceBytes() {
   return ResourceBundle::GetSharedInstance().
       LoadDataResourceBytes(IDR_DOWNLOADS_FAVICON);
 }