Templatize NGInlineItemsBuilder to take a OffsetMappingBuilder parameter

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

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//third_party/WebKit/Source/core/core.gni")
 
 blink_core_sources("layout") {
   split_count = 5
 
   sources = [
@@ skipping 330 matching lines @@
     "ng/geometry/ng_physical_location.cc",
     "ng/geometry/ng_physical_location.h",
     "ng/geometry/ng_physical_offset.cc",
     "ng/geometry/ng_physical_offset.h",
     "ng/geometry/ng_physical_rect.cc",
     "ng/geometry/ng_physical_rect.h",
     "ng/geometry/ng_physical_size.cc",
     "ng/geometry/ng_physical_size.h",
     "ng/geometry/ng_static_position.cc",
     "ng/geometry/ng_static_position.h",
+    "ng/inline/empty_offset_mapping_builder.h",
     "ng/inline/ng_bidi_paragraph.cc",
     "ng/inline/ng_bidi_paragraph.h",
     "ng/inline/ng_inline_box_state.cc",
     "ng/inline/ng_inline_box_state.h",
     "ng/inline/ng_inline_break_token.cc",
     "ng/inline/ng_inline_break_token.h",
     "ng/inline/ng_inline_item.cc",
     "ng/inline/ng_inline_item.h",
     "ng/inline/ng_inline_item_result.cc",
     "ng/inline/ng_inline_item_result.h",
@@ skipping 123 matching lines @@
       "LayoutThemeAndroid.h",
       "WebFontRenderingAndroid.cpp",
     ]
   }
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }