PlzNavigate: Fix form submission to OOPIF frame.

content/browser/frame_host/navigation_request.h

Index: content/browser/frame_host/navigation_request.h
diff --git a/content/browser/frame_host/navigation_request.h b/content/browser/frame_host/navigation_request.h
index 851fcfbbe11e7526339e35f3ef9b8b0d483c84b4..ca6d969d32e93519b00ab8c8ca3e5e733692360f 100644
--- a/content/browser/frame_host/navigation_request.h
+++ b/content/browser/frame_host/navigation_request.h
@@ -82,6 +82,7 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
       PreviewsState previews_state,
       bool is_same_document_history_load,
       bool is_history_navigation_in_new_child,
+      const scoped_refptr<ResourceRequestBodyImpl>& post_body,
       const base::TimeTicks& navigation_start,
       NavigationControllerImpl* controller);