Componentize component_updater: Move some paths/constants to component.

components/component_updater/component_updater_switches.cc

Index: components/component_updater/component_updater_switches.cc
diff --git a/components/component_updater/component_updater_switches.cc b/components/component_updater/component_updater_switches.cc
new file mode 100644
index 0000000000000000000000000000000000000000..dc9de6033ffca2f28d7152912498082f16873c4d
--- /dev/null
+++ b/components/component_updater/component_updater_switches.cc
@@ -0,0 +1,13 @@
+// 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.
+
+#include "components/component_updater/component_updater_switches.h"
+
+namespace switches {
+
+// Comma-separated options to troubleshoot the component updater. Only valid
+// for the browser process.
+const char kComponentUpdater[] = "component-updater";
+
+}  // namespace switches