Don't create parallel request if download is about to complete

content/browser/download/download_stats.h

 // 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.
 //
 // Holds helpers for gathering UMA stats about downloads.
 
 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_STATS_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_STATS_H_
 
 #include <stddef.h>
@@ skipping 156 matching lines @@
 
   // No Content-Length response header.
   FALLBACK_REASON_CONTENT_LENGTH_HEADER,
 
   // File size is not complied to finch configuration.
   FALLBACK_REASON_FILE_SIZE,
 
   // The HTTP connection type does not meet the requirement.
   FALLBACK_REASON_CONNECTION_TYPE,
 
+  // The remaining time does not meet the requirement.
+  FALLBACK_REASON_REMAINING_TIME,
+
   // Last entry of the enum.
   COUNT,
 };
 
 // Increment one of the above counts.
 void RecordDownloadCount(DownloadCountTypes type);
 
 // Record initiation of a download from a specific source.
 void RecordDownloadSource(DownloadSource source);
 
@@ skipping 127 matching lines @@
 
 void RecordDownloadConnectionSecurity(const GURL& download_url,
                                       const std::vector<GURL>& url_chain);
 
 void RecordDownloadSourcePageTransitionType(
     const base::Optional<ui::PageTransition>& transition);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_STATS_H_