Create RenderFrameProxyHost at time of swap-out instead of commit.

content/browser/renderer_host/render_view_host_impl.h

Index: content/browser/renderer_host/render_view_host_impl.h
diff --git a/content/browser/renderer_host/render_view_host_impl.h b/content/browser/renderer_host/render_view_host_impl.h
index 4e3d5ced4225495b3ff22b7064a1eddb2f792c57..7d5a0c8cb910cd3ed9fade58661633fdf135f44c 100644
--- a/content/browser/renderer_host/render_view_host_impl.h
+++ b/content/browser/renderer_host/render_view_host_impl.h
@@ -233,6 +233,7 @@ class CONTENT_EXPORT RenderViewHostImpl
   // created with an opener. (The opener may have been closed since.)
   virtual bool CreateRenderView(const base::string16& frame_name,
                                 int opener_route_id,
+                                int proxy_route_id,

[Charlie Reis, 2014/05/15 22:55:00]

Let's mention this in the comment (e.g., that it's only used when the RenderView
is created in a swapped out state).

[nasko, 2014/05/15 23:36:49]

Done.

                                 int32 max_page_id,
                                 bool window_was_created_with_opener);