[LayoutNG] Add NGLineBoxFragment

third_party/WebKit/Source/core/layout/BUILD.gn

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 f62e8461df08a5b02af18f836f267f247c66f467..16ccfb874757a2e901294788597cf74df6abbfbf 100644
--- a/third_party/WebKit/Source/core/layout/BUILD.gn
+++ b/third_party/WebKit/Source/core/layout/BUILD.gn
@@ -348,6 +348,12 @@ blink_core_sources("layout") {
     "ng/ng_length_utils.h",
     "ng/ng_line_builder.cc",
     "ng/ng_line_builder.h",
+    "ng/ng_line_height_metrics.cc",
+    "ng/ng_line_height_metrics.h",
+    "ng/ng_linebox_fragment.cc",
+    "ng/ng_linebox_fragment.h",
+    "ng/ng_linebox_fragment_builder.cc",
+    "ng/ng_linebox_fragment_builder.h",
     "ng/ng_macros.h",
     "ng/ng_min_max_content_size.cc",
     "ng/ng_min_max_content_size.h",
@@ -357,6 +363,8 @@ blink_core_sources("layout") {
     "ng/ng_physical_box_fragment.h",
     "ng/ng_physical_fragment.cc",
     "ng/ng_physical_fragment.h",
+    "ng/ng_physical_linebox_fragment.cc",
+    "ng/ng_physical_linebox_fragment.h",
     "ng/ng_physical_text_fragment.h",
     "ng/ng_relative_utils.cc",
     "ng/ng_relative_utils.h",
@@ -364,6 +372,8 @@ blink_core_sources("layout") {
     "ng/ng_space_utils.h",
     "ng/ng_text_fragment.cc",
     "ng/ng_text_fragment.h",
+    "ng/ng_text_fragment_builder.cc",
+    "ng/ng_text_fragment_builder.h",
     "ng/ng_text_layout_algorithm.cc",
     "ng/ng_text_layout_algorithm.h",
     "ng/ng_writing_mode.cc",