Fix the Unthrottled download count for parallel download

content/browser/download/download_request_core.h

Index: content/browser/download/download_request_core.h
diff --git a/content/browser/download/download_request_core.h b/content/browser/download/download_request_core.h
index 395a90e4557cd4732b4b1510b635a6857e16404a..12e15cdcc8e0c10fcd8c3c784e262070ef63598f 100644
--- a/content/browser/download/download_request_core.h
+++ b/content/browser/download/download_request_core.h
@@ -52,8 +52,11 @@ class CONTENT_EXPORT DownloadRequestCore
   };
 
   // All parameters are required. |request| and |delegate| must outlive
-  // DownloadRequestCore.
-  DownloadRequestCore(net::URLRequest* request, Delegate* delegate);
+  // DownloadRequestCore. The request is not the main request if
+  // |is_parallel_request| is true.
+  DownloadRequestCore(net::URLRequest* request,
+                      Delegate* delegate,
+                      bool is_parallel_request);
   ~DownloadRequestCore();
 
   // Should be called when the URLRequest::Delegate receives OnResponseStarted.