Make DownloadHistory observe manager, items

chrome/browser/ui/webui/downloads_dom_handler.cc

 // Copyright (c) 2012 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_dom_handler.h"
 
 #include <algorithm>
 #include <functional>
 
 #include "base/basictypes.h"
@@ skipping 344 matching lines @@
   }
 
   // Add ourself to all download items as an observer.
   for (OrderedDownloads::iterator it = download_items_.begin();
        it != download_items_.end(); ++it) {
     if (static_cast<int>(it - download_items_.begin()) > kMaxDownloads)
       break;
 
     // We should never see anything that isn't already in the history.
     DCHECK(*it);
-    DCHECK((*it)->IsPersisted());
 
     (*it)->AddObserver(this);
   }
 
   SendCurrentDownloads();
 }
 
 void DownloadsDOMHandler::ManagerGoingDown(content::DownloadManager* manager) {
   // This should never happen.  The lifetime of the DownloadsDOMHandler
   // is tied to the tab in which downloads.html is displayed, which cannot
@@ skipping 67 matching lines @@
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_PAUSE);
   content::DownloadItem* file = GetDownloadByValue(args);
   if (file)
     file->TogglePause();
 }
 
 void DownloadsDOMHandler::HandleRemove(const ListValue* args) {
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_REMOVE);
   content::DownloadItem* file = GetDownloadByValue(args);
   if (file) {
-    DCHECK(file->IsPersisted());
     file->Remove();
   }
 }
 
 void DownloadsDOMHandler::HandleCancel(const ListValue* args) {
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_CANCEL);
   content::DownloadItem* file = GetDownloadByValue(args);
   if (file)
     file->Cancel(true);
 }
@@ skipping 77 matching lines @@
 }
 
 content::DownloadItem* DownloadsDOMHandler::GetDownloadByValue(
     const ListValue* args) {
   int id;
   if (ExtractIntegerValue(args, &id)) {
     return GetDownloadById(id);
   }
   return NULL;
 }