[login_manager] Code to add the owner to the whitelist in a device policy

mock_device_policy.h

Index: mock_device_policy.h
diff --git a/mock_device_policy.h b/mock_device_policy.h
index 75ebff53fd9f73a7e6acd5f7a994555094118181..7b70f3a3996cd49d0f9d19411785b570d76d87f9 100644
--- a/mock_device_policy.h
+++ b/mock_device_policy.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -17,7 +17,8 @@ class MockDevicePolicy : public DevicePolicy {
   virtual ~MockDevicePolicy() {}
   MOCK_METHOD0(LoadOrCreate, bool(void));
   MOCK_METHOD0(Persist, bool(void));
-  MOCK_CONST_METHOD1(Get, bool(std::string*));
+  MOCK_CONST_METHOD0(Get, const enterprise_management::PolicyFetchResponse&());
+  MOCK_CONST_METHOD1(SerializeToString, bool(std::string*));
   MOCK_METHOD1(Set, void(const enterprise_management::PolicyFetchResponse&));
 };
 }  // namespace login_manager