Give the main frame a RenderWidget.

content/browser/frame_host/interstitial_page_impl.cc

Index: content/browser/frame_host/interstitial_page_impl.cc
diff --git a/content/browser/frame_host/interstitial_page_impl.cc b/content/browser/frame_host/interstitial_page_impl.cc
index e93660bcbab821726cea9fc93b8be45b570bbd18..890a57f6beb223f75f27e23eb9a239d663ef16ba 100644
--- a/content/browser/frame_host/interstitial_page_impl.cc
+++ b/content/browser/frame_host/interstitial_page_impl.cc
@@ -19,6 +19,7 @@
 #include "content/browser/frame_host/interstitial_page_navigator_impl.h"
 #include "content/browser/frame_host/navigation_controller_impl.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
+#include "content/browser/gpu/gpu_surface_tracker.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
@@ -591,9 +592,12 @@ RenderViewHostImpl* InterstitialPageImpl::CreateRenderViewHost() {
       new SessionStorageNamespaceImpl(dom_storage_context);
 
   // Use the RenderViewHost from our FrameTree.
-  frame_tree_.root()->render_manager()->Init(
-      browser_context, site_instance.get(), MSG_ROUTING_NONE, MSG_ROUTING_NONE,
-      MSG_ROUTING_NONE, 0 /* surface_id */);
+  int32 widget_routing_id = site_instance->GetProcess()->GetNextRoutingID();
+  int32 surface_id = GpuSurfaceTracker::Get()->AddSurfaceForRenderer(
+      site_instance->GetProcess()->GetID(), widget_routing_id);
+  frame_tree_.root()->render_manager()->Init(site_instance.get(),
+                                             MSG_ROUTING_NONE, MSG_ROUTING_NONE,
+                                             widget_routing_id, surface_id);
   return frame_tree_.root()->current_frame_host()->render_view_host();
 }
 
@@ -757,8 +761,10 @@ gfx::Rect InterstitialPageImpl::GetRootWindowResizerRect() const {
 
 void InterstitialPageImpl::CreateNewWindow(
     SiteInstance* source_site_instance,
-    int route_id,
-    int main_frame_route_id,
+    int32 route_id,
+    int32 main_frame_route_id,
+    int32 main_frame_widget_route_id,
+    int32 surface_id,
     const ViewHostMsg_CreateWindow_Params& params,
     SessionStorageNamespace* session_storage_namespace) {
   NOTREACHED() << "InterstitialPage does not support showing popups yet.";