Add new UMA stats for parallelizable download

content/browser/download/download_job.cc

Index: content/browser/download/download_job.cc
diff --git a/content/browser/download/download_job.cc b/content/browser/download/download_job.cc
index 1e3f3f58249fd54bed36ab99f6c4a58fdfc222c2..cbdf35f786da9fb037504e30ca7d8601202d0ad9 100644
--- a/content/browser/download/download_job.cc
+++ b/content/browser/download/download_job.cc
@@ -62,10 +62,10 @@ void DownloadJob::SetPotentialFileLength(int64_t length) {
   }
 }
 
-bool DownloadJob::UsesParallelRequests() const {
+void DownloadJob::CancelRequestWithOffset(int64_t offset) {}
+
+bool DownloadJob::IsParallelizable() const {
   return false;
 }
 
-void DownloadJob::CancelRequestWithOffset(int64_t offset) {}
-
 }  // namespace content