Add extra information for ReadingList ContentSuggestion

components/ntp_snippets/BUILD.gn

 # Copyright 2014 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("//build/config/ui.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
@@ skipping 29 matching lines @@
     "ntp_snippets_constants.cc",
     "ntp_snippets_constants.h",
     "offline_pages/recent_tab_suggestions_provider.cc",
     "offline_pages/recent_tab_suggestions_provider.h",
     "physical_web_pages/physical_web_page_suggestions_provider.cc",
     "physical_web_pages/physical_web_page_suggestions_provider.h",
     "pref_names.cc",
     "pref_names.h",
     "pref_util.cc",
     "pref_util.h",
+    "reading_list/reading_list_distillation_state_util.cc",
+    "reading_list/reading_list_distillation_state_util.h",
     "reading_list/reading_list_suggestions_provider.cc",
     "reading_list/reading_list_suggestions_provider.h",
     "remote/json_request.cc",
     "remote/json_request.h",
     "remote/persistent_scheduler.h",
     "remote/remote_suggestion.cc",
     "remote/remote_suggestion.h",
     "remote/remote_suggestions_database.cc",
     "remote/remote_suggestions_database.h",
     "remote/remote_suggestions_fetcher.cc",
@@ skipping 151 matching lines @@
 
   deps = [
     ":ntp_snippets",
     "//base",
     "//components/offline_pages/core",
     "//components/offline_pages/core:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }