[login_manager] Add stub DBus API for policy get/set

session_manager_service.h

 // Copyright (c) 2009-2010 The Chromium OS 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 LOGIN_MANAGER_SESSION_MANAGER_SERVICE_H_
 #define LOGIN_MANAGER_SESSION_MANAGER_SERVICE_H_
 
 #include <dbus/dbus.h>
 #include <errno.h>
 #include <glib.h>
@@ skipping 272 matching lines @@
                          GArray* signature,
                          GError** error);
 
   // Get the value and signature associated with |name| out of |store|.
   // Returns TRUE if the data is can be fetched, FALSE otherwise.
   gboolean RetrieveProperty(gchar* name,
                             gchar** OUT_value,
                             GArray** OUT_signature,
                             GError** error);
 
+  // Store |policy_blob, signature| to disk.
+  //
+  // |signature| is a SAH1 with RSA signature over |policy_blob|,
+  // verifiable with |key_|.
+  //
+  // Returns TRUE if the signature checks out and the data is inserted,
+  // FALSE otherwise.
+  gboolean StorePolicy(gchar* policy_blob, GArray* signature, GError** error);
+
+  // Get the policy_blob and associated signature off of disk.
+  // Returns TRUE if the data is can be fetched, FALSE otherwise.
+  gboolean RetrievePolicy(gchar** OUT_policy_blob,
+                          GArray** OUT_signature,
+                          GError** error);
+
   // Handles LockScreen request from PowerManager. It switches itself to
   // lock mode, and emit LockScreen signal to Chromium Browser.
   gboolean LockScreen(GError** error);
 
   // Handles UnlockScreen request from PowerManager. It switches itself to
   // unlock mode, and emit UnlockScreen signal to Chromium Browser.
   gboolean UnlockScreen(GError** error);
 
   // Restarts job with specified pid replacing its command line arguments
   // with provided.
@@ skipping 209 matching lines @@
 
   bool shutting_down_;
   bool shutdown_already_;
 
   friend class TestAPI;
   DISALLOW_COPY_AND_ASSIGN(SessionManagerService);
 };
 }  // namespace login_manager
 
 #endif  // LOGIN_MANAGER_SESSION_MANAGER_SERVICE_H_