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

content/browser/download/download_item_impl.cc

Index: content/browser/download/download_item_impl.cc
diff --git a/content/browser/download/download_item_impl.cc b/content/browser/download/download_item_impl.cc
index 966bbae3807574f5ff580ccdaecb4a680d5046b7..a50f7d477b6f131cf89276a3842834ffd281198f 100644
--- a/content/browser/download/download_item_impl.cc
+++ b/content/browser/download/download_item_impl.cc
@@ -1115,7 +1115,8 @@ void DownloadItemImpl::MarkAsComplete() {
 void DownloadItemImpl::DestinationUpdate(
     int64_t bytes_so_far,
     int64_t bytes_per_sec,
-    const std::vector<DownloadItem::ReceivedSlice>& received_slices) {
+    const std::vector<DownloadItem::ReceivedSlice>& received_slices,
+    const std::unordered_set<int64_t>& stream_to_close) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   // If the download is in any other state we don't expect any
   // DownloadDestinationObserver callbacks. An interruption or a cancellation
@@ -1133,6 +1134,12 @@ void DownloadItemImpl::DestinationUpdate(
 
   UpdateProgress(bytes_so_far, bytes_per_sec);
   received_slices_ = received_slices;
+
+  if (job_) {
+    for (int64_t offset : stream_to_close)
+      job_->CancelRequest(offset);
+  }
+
   if (net_log_.IsCapturing()) {
     net_log_.AddEvent(
         net::NetLogEventType::DOWNLOAD_ITEM_UPDATED,