Parallelizable download metrics.

content/browser/download/download_stats.h

Index: content/browser/download/download_stats.h
diff --git a/content/browser/download/download_stats.h b/content/browser/download/download_stats.h
index a419ff7dae03d2d1da2eab63ea8681b08152d63f..2a2b8532b9b68779de8ba82350c5173bb3566e86 100644
--- a/content/browser/download/download_stats.h
+++ b/content/browser/download/download_stats.h
@@ -276,6 +276,12 @@ void RecordParallelizableDownloadStats(
     base::TimeDelta time_without_parallel_streams,
     bool uses_parallel_requests);
 
+// Records the average bandwidth, time, and file size for parallelizable
+// download.
+CONTENT_EXPORT void RecordParallelizableDownloadAverageStats(
+    int64_t bytes_downloaded,
+    const base::TimeDelta& time_span);
+
 // Records the parallel download creation counts and the reasons why the
 // download falls back to non-parallel download.
 void RecordParallelDownloadCreationEvent(ParallelDownloadCreationEvent event);