Keep only base/extractor.[cc|h].

setup/msi_test_utils.cc

-// Copyright 2007-2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-
-// IsMsiHelperInstalled requires MSI version 3.0 for MsiEnumProductsEx.
-// Omaha does not require MSI 3.0.
-#ifdef _WIN32_MSI
-#if (_WIN32_MSI < 300)
-#undef _WIN32_MSI
-#define _WIN32_MSI 300
-#endif
-#else
-#define _WIN32_MSI 300
-#endif
-
-#include <windows.h>
-#include <msi.h>
-#include "omaha/base/constants.h"
-#include "omaha/testing/unit_test.h"
-
-namespace omaha {
-
-bool IsMsiHelperInstalled() {
-  int res = ::MsiEnumProductsEx(kHelperInstallerProductGuid,
-                                NULL,
-                                MSIINSTALLCONTEXT_MACHINE,
-                                0,
-                                NULL,
-                                NULL,
-                                NULL,
-                                NULL);
-
-  bool is_msi_installed = (ERROR_SUCCESS == res);
-  EXPECT_TRUE(is_msi_installed || ERROR_NO_MORE_ITEMS == res);
-
-  return is_msi_installed;
-}
-
-}  // namespace omaha