Adds ChromecastConfig to manage cast_shell's PrefService.

chromecast/common/chromecast_config_simple.cc

Index: chromecast/common/chromecast_config_simple.cc
diff --git a/chromecast/common/chromecast_config_simple.cc b/chromecast/common/chromecast_config_simple.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f62efe524b848cf05ec0bd0438c29d801298eaf6
--- /dev/null
+++ b/chromecast/common/chromecast_config_simple.cc
@@ -0,0 +1,12 @@
+// 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 "chromecast/common/chromecast_config.h"
+
+namespace chromecast {
+
+void ChromecastConfig::RegisterPlatformPrefs(PrefRegistrySimple* registry) {
+}
+
+}  // namespace chromecast