Handle frame openers in the same FrameTree when navigating subframes.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 6eac793c84c08f308daf9937dd9177231f484989..722230a99199d0d627ebdec0efd75839e726b3f9 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -4139,7 +4139,7 @@ void WebContentsImpl::EnsureOpenerProxiesExist(RenderFrameHost* source_rfh) {
       RenderFrameHostImpl* source_rfhi =
           static_cast<RenderFrameHostImpl*>(source_rfh);
       source_rfhi->frame_tree_node()->render_manager()->CreateOpenerProxies(
-          GetSiteInstance());
+          GetSiteInstance(), nullptr);
     }
   }
 }