Adding active_downloads_ map.

chrome/browser/download/download_item.cc

Index: chrome/browser/download/download_item.cc
diff --git a/chrome/browser/download/download_item.cc b/chrome/browser/download/download_item.cc
index f6bee14b83bd482addfac21ec8bc31f49451465d..32f44db0b7d708d048df8422c0b214a223e3f251 100644
--- a/chrome/browser/download/download_item.cc
+++ b/chrome/browser/download/download_item.cc
@@ -330,8 +330,10 @@ void DownloadItem::Finished() {
   // finalized and the file data is downloaded. The ordering of these two
   // actions is indeterministic. Thus, if the filename is not finalized yet,
   // delay the notification.
-  if (name_finalized())
+  if (name_finalized()) {
     NotifyObserversDownloadFileCompleted();
+    download_manager_->RemoveFromActiveList(id());
+  }
 }
 
 void DownloadItem::Remove(bool delete_on_disk) {
@@ -396,8 +398,10 @@ void DownloadItem::OnNameFinalized() {
   // finalized and the file data is downloaded. The ordering of these two
   // actions is indeterministic. Thus, if we are still in downloading the
   // file, delay the notification.
-  if (state() == DownloadItem::COMPLETE)
+  if (state() == DownloadItem::COMPLETE) {
     NotifyObserversDownloadFileCompleted();
+    download_manager_->RemoveFromActiveList(id());
+  }
 }
 
 void DownloadItem::OnSafeDownloadFinished(DownloadFileManager* file_manager) {