Local NTP: Introduce OneGoogleBarFetcher

BUG=583292

Review-Url: https://codereview.chromium.org/2814753002
Cr-Commit-Position: refs/heads/master@{#464393}
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 97f28975..ab942d6 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -3483,6 +3483,11 @@
       "repost_form_warning_controller.h",
       "search/local_ntp_source.cc",
       "search/local_ntp_source.h",
+      "search/one_google_bar/one_google_bar_data.cc",
+      "search/one_google_bar/one_google_bar_data.h",
+      "search/one_google_bar/one_google_bar_fetcher.h",
+      "search/one_google_bar/one_google_bar_fetcher_impl.cc",
+      "search/one_google_bar/one_google_bar_fetcher_impl.h",
       "signin/signin_promo.cc",
       "signin/signin_promo.h",
       "signin/signin_ui_util.cc",