| Index: mojo/services/html_viewer/weblayertreeview_impl.cc | 
| diff --git a/mojo/services/html_viewer/weblayertreeview_impl.cc b/mojo/services/html_viewer/weblayertreeview_impl.cc | 
| index d92492bc6cfe694ccf3930a25b9d8bac569b9378..1f025a9fb3ebaf15557a84b81ead7b902a5279bc 100644 | 
| --- a/mojo/services/html_viewer/weblayertreeview_impl.cc | 
| +++ b/mojo/services/html_viewer/weblayertreeview_impl.cc | 
| @@ -8,6 +8,7 @@ | 
| #include "cc/blink/web_layer_impl.h" | 
| #include "cc/layers/layer.h" | 
| #include "cc/output/begin_frame_args.h" | 
| +#include "cc/scheduler/begin_frame_source.h" | 
| #include "cc/trees/layer_tree_host.h" | 
| #include "mojo/cc/context_provider_mojo.h" | 
| #include "mojo/cc/output_surface_mojo.h" | 
| @@ -47,7 +48,8 @@ WebLayerTreeViewImpl::WebLayerTreeViewImpl( | 
| gpu_memory_buffer_manager, | 
| settings, | 
| base::MessageLoopProxy::current(), | 
| -                                        compositor_message_loop_proxy); | 
| +                                        compositor_message_loop_proxy, | 
| +                                        nullptr); | 
| DCHECK(layer_tree_host_); | 
| } | 
|  | 
|  |