Shift passage of FileStream in downloads system to be by scoped_ptr<>.

content/public/browser/download_url_parameters.cc

Index: content/public/browser/download_url_parameters.cc
diff --git a/content/public/browser/download_url_parameters.cc b/content/public/browser/download_url_parameters.cc
index bff885aa0acae777d3f30d61625c07d1ee493c5b..435365b9221487813db2b4eb39fad434bf2387c0 100644
--- a/content/public/browser/download_url_parameters.cc
+++ b/content/public/browser/download_url_parameters.cc
@@ -20,7 +20,7 @@ DownloadUrlParameters::DownloadUrlParameters(
     int render_process_host_id,
     int render_view_host_routing_id,
     ResourceContext* resource_context,
-    const DownloadSaveInfo& save_info)
+    scoped_ptr<DownloadSaveInfo> save_info)
     : content_initiated_(false),
       load_flags_(0),
       method_("GET"),
@@ -30,7 +30,7 @@ DownloadUrlParameters::DownloadUrlParameters(
       render_view_host_routing_id_(render_view_host_routing_id),
       resource_context_(resource_context),
       resource_dispatcher_host_(ResourceDispatcherHost::Get()),
-      save_info_(save_info),
+      save_info_(save_info.Pass()),
       url_(url) {
   DCHECK(resource_dispatcher_host_);
 }
@@ -42,13 +42,17 @@ DownloadUrlParameters::~DownloadUrlParameters() {
 DownloadUrlParameters* DownloadUrlParameters::FromWebContents(
     WebContents* web_contents,
     const GURL& url,
-    const DownloadSaveInfo& save_info) {
+    scoped_ptr<DownloadSaveInfo> save_info) {
   return new DownloadUrlParameters(
       url,
       web_contents->GetRenderProcessHost()->GetID(),
       web_contents->GetRenderViewHost()->GetRoutingID(),
       web_contents->GetBrowserContext()->GetResourceContext(),
-      save_info);
+      save_info.Pass());
+}
+
+scoped_ptr<DownloadSaveInfo> DownloadUrlParameters::GetSaveInfo() {
+  return save_info_.Pass();
 }
 
 }  // namespace content