Downloads: Added transient flag to download item and download database

chrome/browser/safe_browsing/incident_reporting/last_download_finder_unittest.cc

 // Copyright 2014 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/safe_browsing/incident_reporting/last_download_finder.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
@@ skipping 282 matching lines @@
         47LL,                                        // total
         history::DownloadState::COMPLETE,            // download_state
         history::DownloadDangerType::NOT_DANGEROUS,  // danger_type
         history::ToHistoryDownloadInterruptReason(
             content::DOWNLOAD_INTERRUPT_REASON_NONE),  // interrupt_reason,
         std::string(),                                 // hash
         download_id_++,                                // id
         base::GenerateGUID(),                          // GUID
         false,                                         // download_opened
         now - base::TimeDelta::FromMinutes(5),         // last_access_time
+        true,                                          // download visible

[dgn, 2017/03/08 13:12:04]

nit: use the parameter name, like in the surrounding lines

         std::string(),                                 // ext_id
         std::string(),                                 // ext_name
         std::vector<history::DownloadSliceInfo>());    // download_slice_info
   }
 
   content::TestBrowserThreadBundle browser_thread_bundle_;
   std::unique_ptr<TestingProfileManager> profile_manager_;
 
  private:
   // A HistoryService::DownloadCreateCallback that asserts that the download was
@@ skipping 152 matching lines @@
       base::Bind(&LastDownloadFinderTest::OnLastDownload,
                  base::Unretained(this), &last_binary_download,
                  &last_non_binary_download, run_loop.QuitClosure())));
 
   run_loop.Run();
 
   ASSERT_TRUE(last_binary_download);
 }
 
 }  // namespace safe_browsing