Revert of [LayoutNG] Move remaining ng_units structs to their own files

third_party/WebKit/Source/core/BUILD.gn

Index: third_party/WebKit/Source/core/BUILD.gn
diff --git a/third_party/WebKit/Source/core/BUILD.gn b/third_party/WebKit/Source/core/BUILD.gn
index 27274ed57c9cc7999e7c3d1e2a6aca721a100d27..787678236e321e609123562e56cdfebfe8e28a4d 100644
--- a/third_party/WebKit/Source/core/BUILD.gn
+++ b/third_party/WebKit/Source/core/BUILD.gn
@@ -1300,7 +1300,6 @@
     "layout/compositing/CompositingReasonFinderTest.cpp",
     "layout/line/InlineBoxTest.cpp",
     "layout/line/InlineTextBoxTest.cpp",
-    "layout/ng/geometry/ng_box_strut.cc",
     "layout/ng/geometry/ng_logical_offset_test.cc",
     "layout/ng/geometry/ng_physical_rect_test.cc",
     "layout/ng/ng_absolute_utils_test.cc",
@@ -1312,8 +1311,8 @@
     "layout/ng/ng_inline_node_test.cc",
     "layout/ng/ng_layout_inline_items_builder_test.cc",
     "layout/ng/ng_length_utils_test.cc",
-    "layout/ng/ng_min_max_content_size_test.cc",
     "layout/ng/ng_out_of_flow_layout_part_test.cc",
+    "layout/ng/ng_units_test.cc",
     "layout/shapes/BoxShapeTest.cpp",
     "layout/svg/LayoutSVGRootTest.cpp",
     "loader/DocumentLoadTimingTest.cpp",