Initial patch from Will.

src/platform/cryptohome/mock_mount.h

+// Copyright (c) 2010 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 CRYPTOHOME_MOCK_MOUNT_H_
+#define CRYPTOHOME_MOCK_MOUNT_H_
+
+#include "cryptohome/mount.h"
+
+#include <gmock/gmock.h>
+
+namespace cryptohome {
+class Credentials;
+
+class MockMount : public Mount {
+ public:
+  MockMount() {}
+  ~MockMount() {}
+  MOCK_METHOD0(Init, bool());
+  MOCK_METHOD1(TestCredentials, bool(const Credentials&));
+};
+}  // namespace cryptohome
+
+#endif  // CRYPTOHOME_MOCK_MOUNT_H_