[Downloads] Use the initiating StoragePartition for resumption.

content/browser/renderer_host/render_message_filter.cc

Index: content/browser/renderer_host/render_message_filter.cc
diff --git a/content/browser/renderer_host/render_message_filter.cc b/content/browser/renderer_host/render_message_filter.cc
index a1bbf3488ee5209ca14705b5470f952a1f059f3d..bb8eaa7b48892c828715ce9c44a711eb07944f9a 100644
--- a/content/browser/renderer_host/render_message_filter.cc
+++ b/content/browser/renderer_host/render_message_filter.cc
@@ -412,7 +412,7 @@ void RenderMessageFilter::DownloadUrl(int render_view_id,
 
   std::unique_ptr<DownloadUrlParameters> parameters(
       new DownloadUrlParameters(url, render_process_id_, render_view_id,
-                                render_frame_id, resource_context_));
+                                render_frame_id, request_context_.get()));
   parameters->set_content_initiated(true);
   parameters->set_suggested_name(suggested_name);
   parameters->set_prompt(use_prompt);