Fix an issue that we didn't clean url request properly.

content/browser/download/download_destination_observer.h

Index: content/browser/download/download_destination_observer.h
diff --git a/content/browser/download/download_destination_observer.h b/content/browser/download/download_destination_observer.h
index 7fb6297b63b5efc9a7ad1c9d18d9d9fff27f190b..5ffee01ac5b7d60c52a8fb197c1e6df2f1b89a60 100644
--- a/content/browser/download/download_destination_observer.h
+++ b/content/browser/download/download_destination_observer.h
@@ -9,6 +9,7 @@
 
 #include <memory>
 #include <string>
+#include <unordered_set>
 
 #include "content/public/browser/download_interrupt_reasons.h"
 #include "content/public/browser/download_item.h"
@@ -31,7 +32,8 @@ class DownloadDestinationObserver {
   virtual void DestinationUpdate(
       int64_t bytes_so_far,
       int64_t bytes_per_sec,
-      const std::vector<DownloadItem::ReceivedSlice>& received_slices) = 0;
+      const std::vector<DownloadItem::ReceivedSlice>& received_slices,
+      const std::unordered_set<int64_t>& stream_to_close) = 0;
 
   virtual void DestinationError(
       DownloadInterruptReason reason,