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..13aab6d5c38ca3748c70a8edf70dbe2084f8a687 100644
--- a/content/browser/renderer_host/render_view_host_impl.h
+++ b/content/browser/renderer_host/render_view_host_impl.h
@@ -231,8 +231,11 @@ class CONTENT_EXPORT RenderViewHostImpl
   // RenderView is told to start issuing page IDs at |max_page_id| + 1.
   // |window_was_created_with_opener| is true if this top-level frame was
   // created with an opener. (The opener may have been closed since.)
+  // The |proxy_route_id| is only used when creating a RenderView in swapped out
+  // state.
   virtual bool CreateRenderView(const base::string16& frame_name,
                                 int opener_route_id,
+                                int proxy_route_id,
                                 int32 max_page_id,
                                 bool window_was_created_with_opener);