| Index: gpu/ipc/service/BUILD.gn | 
| diff --git a/gpu/ipc/service/BUILD.gn b/gpu/ipc/service/BUILD.gn | 
| index e2091c1dcf99f9259c8a5dcda5c3c7cd32cfd48f..686c4a9607778f6cc35485fad3270719558d9c62 100644 | 
| --- a/gpu/ipc/service/BUILD.gn | 
| +++ b/gpu/ipc/service/BUILD.gn | 
| @@ -83,6 +83,8 @@ target(link_target_type, "ipc_service_sources") { | 
| "child_window_surface_win.h", | 
| "child_window_win.cc", | 
| "child_window_win.h", | 
| +      "direct_composition_child_surface_win.cc", | 
| +      "direct_composition_child_surface_win.h", | 
| "direct_composition_surface_win.cc", | 
| "direct_composition_surface_win.h", | 
| "image_transport_surface_win.cc", | 
|  |