Remove more //chrome dependencies from VariationsService

components/variations/variations_switches.cc

+// Copyright 2015 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/variations/variations_switches.h"
+
+namespace chrome_variations {
+namespace switches {
+
+// Fakes the channel of the browser for purposes of Variations filtering. This
+// is to be used for testing only. Possible values are "stable", "beta", "dev"
+// and "canary". Note that this only applies if the browser's reported channel
+// is UNKNOWN.
+const char kFakeVariationsChannel[] = "fake-variations-channel";
+
+// Specifies a custom URL for the server which reports variation data to the
+// client. Specifying this switch enables the Variations service on
+// unofficial builds. See variations_service.cc.
+const char kVariationsServerURL[] = "variations-server-url";
+
+}  // namespace switches
+}  // namespace chrome_variations