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

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 b02984b877e81175d44226033125e7bff05f4c42..d4773f31e33577b1ae7186403f6e7e4cc3c50f5b 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -3773,6 +3773,7 @@ NavigationEntry*
 bool WebContentsImpl::CreateRenderViewForRenderManager(
     RenderViewHost* render_view_host,
     int opener_route_id,
+    int proxy_routing_id,
     CrossProcessFrameConnector* frame_connector) {
   TRACE_EVENT0("browser", "WebContentsImpl::CreateRenderViewForRenderManager");
   // Can be NULL during tests.
@@ -3802,6 +3803,7 @@ bool WebContentsImpl::CreateRenderViewForRenderManager(
   if (!static_cast<RenderViewHostImpl*>(
           render_view_host)->CreateRenderView(base::string16(),
                                               opener_route_id,
+                                              proxy_routing_id,
                                               max_page_id,
                                               created_with_opener_)) {
     return false;
@@ -3837,6 +3839,7 @@ WebContentsImpl::GetJavaWebContents() {
 bool WebContentsImpl::CreateRenderViewForInitialEmptyDocument() {
   return CreateRenderViewForRenderManager(GetRenderViewHost(),
                                           MSG_ROUTING_NONE,
+                                          MSG_ROUTING_NONE,
                                           NULL);
 }