| Index: third_party/WebKit/Source/core/layout/BUILD.gn | 
| diff --git a/third_party/WebKit/Source/core/layout/BUILD.gn b/third_party/WebKit/Source/core/layout/BUILD.gn | 
| index bf1b7a3cb2c859f9c827ed8f06e64a07ae12ea1e..4b8853ae2fdd7f7ad66df2c44b4cc903450ff25e 100644 | 
| --- a/third_party/WebKit/Source/core/layout/BUILD.gn | 
| +++ b/third_party/WebKit/Source/core/layout/BUILD.gn | 
| @@ -325,6 +325,8 @@ blink_core_sources("layout") { | 
| "line/TrailingObjects.cpp", | 
| "line/TrailingObjects.h", | 
| "line/WordMeasurement.h", | 
| +    "ng/api/ng_offset_mapping_builder.cc", | 
| +    "ng/api/ng_offset_mapping_builder.h", | 
| "ng/geometry/ng_border_edges.cc", | 
| "ng/geometry/ng_border_edges.h", | 
| "ng/geometry/ng_box_strut.cc", | 
|  |