Don't prompt to save malicious downloads on exit

chrome/browser/download/download_browsertest.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 <sstream>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 685 matching lines @@
     return new content::DownloadTestObserverInProgress(
         manager, download_count);
   }
 
   DownloadItem* CreateSlowTestDownload() {
     scoped_ptr<content::DownloadTestObserver> observer(
         CreateInProgressDownloadObserver(1));
     GURL slow_download_url(URLRequestSlowDownloadJob::kUnknownSizeUrl);
     DownloadManager* manager = DownloadManagerForBrowser(browser());
 
+    EXPECT_EQ(0, manager->NonMaliciousInProgressCount());
     EXPECT_EQ(0, manager->InProgressCount());
     if (manager->InProgressCount() != 0)
       return NULL;
 
     ui_test_utils::NavigateToURLWithDisposition(
         browser(), slow_download_url, CURRENT_TAB,
         ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
 
     observer->WaitForFinished();
     EXPECT_EQ(1u, observer->NumDownloadsSeenInState(DownloadItem::IN_PROGRESS));
@@ skipping 2526 matching lines @@
 
   // No errors this time. The download should complete successfully.
   EXPECT_FALSE(completion_observer->IsFinished());
   completion_observer->StartObserving();
   download->Resume();
   completion_observer->WaitForFinished();
   EXPECT_EQ(DownloadItem::COMPLETE, download->GetState());
 
   EXPECT_FALSE(DidShowFileChooser());
 }