Fix warning prompting on closing a window that will cancel downloads.

chrome/browser/download/download_manager.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/download/download_manager.h"
 
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/i18n/case_conversion.h"
 #include "base/logging.h"
@@ skipping 687 matching lines @@
     // TODO(rdsmith): Somewhat painful; make sure to disable in
     // release builds after resolution of http://crbug.com/85408.
     for (DownloadMap::iterator it = history_downloads_.begin();
          it != history_downloads_.end(); ++it) {
       CHECK(it->second != download);
     }
   }
 
   CHECK(ContainsKey(active_downloads_, download->id()) ==
         (download->state() == DownloadItem::IN_PROGRESS));
-  CHECK(ContainsKey(in_progress_, download->id()) ==
-        (download->state() == DownloadItem::IN_PROGRESS));
 }
 
 bool DownloadManager::IsDownloadReadyForCompletion(DownloadItem* download) {
   // If we don't have all the data, the download is not ready for
   // completion.
   if (!download->all_data_saved())
     return false;
 
   // If the download is dangerous, but not yet validated, it's not ready for
   // completion.
@@ skipping 598 matching lines @@
     observed_download_manager_->RemoveObserver(this);
 }
 
 void DownloadManager::OtherDownloadManagerObserver::ModelChanged() {
   observing_download_manager_->NotifyModelChanged();
 }
 
 void DownloadManager::OtherDownloadManagerObserver::ManagerGoingDown() {
   observed_download_manager_ = NULL;
 }