Start app shim when app launched.

apps/app_shim/app_shim_launch.h

+// 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_APP_SHIM_APP_SHIM_LAUNCH_H_
+#define APPS_APP_SHIM_APP_SHIM_LAUNCH_H_
+
+namespace apps {
+
+enum AppShimLaunchType {
+  // Process the app shim's LaunchAppmessage and associate the shim with the
+  // given profile and app id.
+  APP_SHIM_LAUNCH_REGISTER_ONLY = 0,
+  // Do the above and launch the app.
+  APP_SHIM_LAUNCH_NORMAL,
+};
+
+}  // namespace apps
+
+#endif  // APPS_APP_SHIM_APP_SHIM_LAUNCH_H_