Move app_launcher.* out of chrome/browser/extensions and into apps/

apps/pref_names.h

Index: apps/pref_names.h
diff --git a/apps/pref_names.h b/apps/pref_names.h
new file mode 100644
index 0000000000000000000000000000000000000000..1cca82f71d3bb13992f9a84eea57db0eaab9e94a
--- /dev/null
+++ b/apps/pref_names.h
@@ -0,0 +1,18 @@
+// Copyright 2013 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 APPS_PREF_NAMES_H_
+#define APPS_PREF_NAMES_H_
+
+namespace apps {
+
+namespace prefs {
+
+extern const char kAppLauncherIsEnabled[];
+
+}  // namespace prefs
+
+}  // namespace apps
+
+#endif  // APPS_PREF_NAMES_H_