Made ownership of DownloadRequestHandles clear through scoped_ptr<>

content/browser/download/download_item_factory.h

Index: content/browser/download/download_item_factory.h
diff --git a/content/browser/download/download_item_factory.h b/content/browser/download/download_item_factory.h
index 84110d9f31d6a22f5d2fa54c56b39e86fdcb93bf..47069f57f46266ba26508a9eb7bd968be2c498d3 100644
--- a/content/browser/download/download_item_factory.h
+++ b/content/browser/download/download_item_factory.h
@@ -14,6 +14,8 @@
 
 #include <string>
 
+#include "base/memory/scoped_ptr.h"
+
 struct DownloadCreateInfo;
 class DownloadRequestHandleInterface;
 class FilePath;
@@ -44,7 +46,7 @@ public:
   virtual content::DownloadItem* CreateActiveItem(
       DownloadItemImpl::Delegate* delegate,
       const DownloadCreateInfo& info,
-      DownloadRequestHandleInterface* request_handle,
+      scoped_ptr<DownloadRequestHandleInterface> request_handle,
       bool is_otr,
       const net::BoundNetLog& bound_net_log) = 0;