| Index: components/view_manager/public/cpp/BUILD.gn | 
| diff --git a/components/view_manager/public/cpp/BUILD.gn b/components/view_manager/public/cpp/BUILD.gn | 
| index ba91a1d1e48a5702e0e8f4925ddfae834b75239f..03a1c570a7c1ef811cce54947948ba849e95d018 100644 | 
| --- a/components/view_manager/public/cpp/BUILD.gn | 
| +++ b/components/view_manager/public/cpp/BUILD.gn | 
| @@ -14,6 +14,7 @@ mojo_sdk_source_set("cpp") { | 
| "lib/view_observer.cc", | 
| "lib/view_private.cc", | 
| "lib/view_private.h", | 
| +    "lib/view_surface.cc", | 
| "lib/view_tree_client_impl.cc", | 
| "lib/view_tree_client_impl.h", | 
| "lib/view_tree_delegate.cc", | 
| @@ -22,6 +23,8 @@ mojo_sdk_source_set("cpp") { | 
| "view.h", | 
| "view_observer.h", | 
| "view_property.h", | 
| +    "view_surface.h", | 
| +    "view_surface_client.h", | 
| "view_tracker.cc", | 
| "view_tracker.h", | 
| "view_tree_connection.h", | 
| @@ -38,6 +41,7 @@ mojo_sdk_source_set("cpp") { | 
| deps = [ | 
| "//mojo/application/public/cpp", | 
| "//mojo/application/public/interfaces", | 
| +    "//mojo/converters/surfaces", | 
| "//ui/mojo/events:interfaces", | 
| "//ui/mojo/geometry:interfaces", | 
| "//base", | 
|  |