Hard coded finch config for Popular site

components/ntp_tiles/field_trial.h

Index: components/ntp_tiles/field_trial.h
diff --git a/components/ntp_tiles/field_trial.h b/components/ntp_tiles/field_trial.h
new file mode 100644
index 0000000000000000000000000000000000000000..c54052e82d05526b938fa36efb3857f210bae050
--- /dev/null
+++ b/components/ntp_tiles/field_trial.h
@@ -0,0 +1,16 @@
+// 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.
+
+#ifndef COMPONENTS_NTP_TILES_FIELD_TRIAL_H_
+#define COMPONENTS_NTP_TILES_FIELD_TRIAL_H_
+
+namespace ntp_tiles {
+
+void SetUpFirstLaunchFieldTrial(bool is_stable_channel);
+
+bool ShouldShowPopularSites();
+
+}  // namespace ntp_tiles
+
+#endif  // COMPONENTS_NTP_TILES_FIELD_TRIAL_H_