cryptohome: Move Encrypt/DecryptWithSystemSalt() out of CryptohomeLibrary

chromeos/cryptohome/mock_cryptohome_library.cc

Index: chromeos/cryptohome/mock_cryptohome_library.cc
diff --git a/chromeos/cryptohome/mock_cryptohome_library.cc b/chromeos/cryptohome/mock_cryptohome_library.cc
deleted file mode 100644
index 1916f9eced46819d1ea45fa3772ba06b846e94a4..0000000000000000000000000000000000000000
--- a/chromeos/cryptohome/mock_cryptohome_library.cc
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright (c) 2012 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.
-
-#include "chromeos/cryptohome/mock_cryptohome_library.h"
-
-namespace chromeos {
-
-MockCryptohomeLibrary::MockCryptohomeLibrary() {
-}
-
-MockCryptohomeLibrary::~MockCryptohomeLibrary() {}
-
-}  // namespace chromeos