Move frame_to_announce to be assigned later in CreateRenderFrame.

content/browser/frame_host/render_frame_host_manager.cc

Index: content/browser/frame_host/render_frame_host_manager.cc
diff --git a/content/browser/frame_host/render_frame_host_manager.cc b/content/browser/frame_host/render_frame_host_manager.cc
index 29e6052fabb48307653260efd6bc6c248f984c2c..581f55b86e88c10bf8d159c2d438186ef9e321b3 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -963,7 +963,6 @@ int RenderFrameHostManager::CreateRenderFrame(
     RenderViewHostImpl* render_view_host =
         new_render_frame_host->render_view_host();
     int proxy_routing_id = MSG_ROUTING_NONE;
-    frame_to_announce = new_render_frame_host.get();
 
     // Prevent the process from exiting while we're trying to navigate in it.
     // Otherwise, if the new RFH is swapped out already, store it.
@@ -987,6 +986,7 @@ int RenderFrameHostManager::CreateRenderFrame(
       CancelPending();
     }
     routing_id = render_view_host->GetRoutingID();
+    frame_to_announce = new_render_frame_host.get();
   }
 
   // Use this as our new pending RFH if it isn't swapped out.