Do not use overlays when VR shell is enabled.

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index 0051c60bb5d303143edf46a6fd0e9e34e90edd2b..c2ec9d63aa1ae14673898350a80082f544fed0c1 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -673,6 +673,8 @@ void RenderWidgetHostImpl::WasResized() {
   bool width_changed =
       !old_resize_params_ ||
       old_resize_params_->new_size.width() != params->new_size.width();
+
+  LOG(ERROR) << "===amp=== sending resize message, in vr = " << params->screen_info.in_vr;
   if (Send(new ViewMsg_Resize(routing_id_, *params))) {
     resize_ack_pending_ = params->needs_resize_ack;
     old_resize_params_.swap(params);