Merge 79440 - Clean up unload-related state after the ack is received.

content/browser/renderer_host/render_view_host.h

Index: content/browser/renderer_host/render_view_host.h
===================================================================
--- content/browser/renderer_host/render_view_host.h	(revision 79779)
+++ content/browser/renderer_host/render_view_host.h	(working copy)
@@ -180,6 +180,9 @@
                  int new_render_process_host_id,
                  int new_request_id);
 
+  // Called by ResourceDispatcherHost after the ClosePageACK is received.
+  void OnClosePageACK(bool for_cross_site_transition);
+
   // Close the page ignoring whether it has unload events registers.
   // This is called after the beforeunload and unload events have fired
   // and the user has agreed to continue with closing the page.