[NTPSnippets] Show all downloads on the NTP (3/3): Downloads provider.

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 13 matching lines @@
     "category_status.cc",
     "category_status.h",
     "content_suggestion.cc",
     "content_suggestion.h",
     "content_suggestions_metrics.cc",
     "content_suggestions_metrics.h",
     "content_suggestions_provider.cc",
     "content_suggestions_provider.h",
     "content_suggestions_service.cc",
     "content_suggestions_service.h",
+    "downloads/download_suggestions_provider.cc",
+    "downloads/download_suggestions_provider.h",
     "features.cc",
     "features.h",
     "ntp_snippet.cc",
     "ntp_snippet.h",
     "ntp_snippets_constants.cc",
     "ntp_snippets_constants.h",
     "ntp_snippets_database.cc",
     "ntp_snippets_database.h",
     "ntp_snippets_fetcher.cc",
     "ntp_snippets_fetcher.h",
@@ skipping 104 matching lines @@
     "//components/strings",
     "//components/sync:test_support_sync_driver",
     "//components/sync_sessions",
     "//components/variations",
     "//net:test_support",
     "//testing/gtest",
     "//third_party/icu/",
     "//ui/gfx:test_support",
   ]
 }