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

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 562e611ef20b32b34f9be51c52c46bbbe411d5ac..2c390be651931b3dd946c231bf2619ef1a0f11bb 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -263,6 +263,7 @@ SiteInstance* RenderViewHostImpl::GetSiteInstance() const {
 bool RenderViewHostImpl::CreateRenderView(
     const base::string16& frame_name,
     int opener_route_id,
+    int proxy_routing_id,
     int32 max_page_id,
     bool window_was_created_with_opener) {
   TRACE_EVENT0("renderer_host", "RenderViewHostImpl::CreateRenderView");
@@ -294,6 +295,7 @@ bool RenderViewHostImpl::CreateRenderView(
   params.web_preferences = delegate_->GetWebkitPrefs();
   params.view_id = GetRoutingID();
   params.main_frame_routing_id = main_frame_routing_id_;
+  params.proxy_routing_id = proxy_routing_id;
   params.surface_id = surface_id();
   params.session_storage_namespace_id =
       delegate_->GetSessionStorageNamespace(instance_)->id();