Create //components/ntp_tiles.

components/ntp_tiles/switches.cc

+// 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.
+
+#include "components/ntp_tiles/switches.h"
+
+namespace ntp_tiles {
+namespace switches {
+
+// Enables using the default search engine country to show country specific
+// popular sites on the NTP.
+const char kEnableNTPSearchEngineCountryDetection[] =
+    "enable-ntp-search-engine-country-detection";
+
+// Enables showing popular sites on the NTP.
+const char kEnableNTPPopularSites[]         = "enable-ntp-popular-sites";
+
+// Disables showing popular sites on the NTP.
+const char kDisableNTPPopularSites[]        = "disable-ntp-popular-sites";
+
+}  // namespace switches
+}  // namespace ntp_tiles