Create ReadingListSuggestionsProvider

components/ntp_snippets/BUILD.gn

Index: components/ntp_snippets/BUILD.gn
diff --git a/components/ntp_snippets/BUILD.gn b/components/ntp_snippets/BUILD.gn
index a99765e268babe212054f691022a16f681efeb5c..c0752c88da775e699c7fe8d8e758d075bcf82e59 100644
--- a/components/ntp_snippets/BUILD.gn
+++ b/components/ntp_snippets/BUILD.gn
@@ -47,6 +47,8 @@ static_library("ntp_snippets") {
     "pref_names.h",
     "pref_util.cc",
     "pref_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",
@@ -107,6 +109,7 @@ static_library("ntp_snippets") {
     "//components/offline_pages/core/downloads:offline_pages_ui_adapter",
     "//components/offline_pages/core/recent_tabs",
     "//components/physical_web/data_source",
+    "//components/reading_list/core",

[Olivier, 2017/03/24 09:43:14]

I would prefer not add a dependency to reading list on platform that don't use
it.

You can use the gn flag enable_reading_list to condition this dep (and the file
compilation).

     "//components/sessions",
     "//components/strings",
     "//components/sync_sessions",
@@ -140,6 +143,7 @@ source_set("unit_tests") {
     "content_suggestions_service_unittest.cc",
     "offline_pages/recent_tab_suggestions_provider_unittest.cc",
     "physical_web_pages/physical_web_page_suggestions_provider_unittest.cc",
+    "reading_list/reading_list_suggestions_provider_unittest.cc",
     "remote/json_request_unittest.cc",
     "remote/remote_suggestion_unittest.cc",
     "remote/remote_suggestions_database_unittest.cc",
@@ -171,6 +175,7 @@ source_set("unit_tests") {
     "//components/offline_pages/core/downloads:offline_pages_ui_adapter",
     "//components/offline_pages/core/recent_tabs",
     "//components/physical_web/data_source:test_support",
+    "//components/reading_list/core",
     "//components/sessions",
     "//components/sessions:test_support",
     "//components/signin/core/browser:test_support",