Add -multifail to the Google Update "ap" value if --multi-install is present ...

chrome/installer/mini_installer/mini_installer.h

 // Copyright (c) 2006-2009 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 CHROME_INSTALLER_MINI_INSTALLER_MINI_INSTALLER_H_
 #define CHROME_INSTALLER_MINI_INSTALLER_MINI_INSTALLER_H_
 #pragma once
 
 // The windows command line to uncompress a LZ compressed file. It is a define
 // because we need the string to be writable. We don't need the full path
@@ skipping 10 matching lines @@
 // setup.exe command line arguements
 const wchar_t kCmdInstallArchive[] = L" --install-archive";
 const wchar_t kCmdUpdateSetupExe[] = L" --update-setup-exe";
 const wchar_t kCmdNewSetupExe[] = L" --new-setup-exe";
 
 // Temp directory prefix that this process creates
 const wchar_t kTempPrefix[] = L"CR_";
 // Google Update will use the full installer if this suffix is found in the ap
 // value.
 const wchar_t kFullInstallerSuffix[] = L"-full";
+// Google Update will use the single-install configuration if this suffix is
+// found in the ap value.
+const wchar_t kMultifailInstallerSuffix[] = L"-multifail";
 // ap value tag for a multi-install product.
 const wchar_t kMultiInstallTag[] = L"-multi";
 
 // The resource types that would be unpacked from the mini installer.
 // 'BN' is uncompressed binary and 'BL' is LZ compressed binary.
 const wchar_t kBinResourceType[] = L"BN";
 const wchar_t kLZCResourceType[] = L"BL";
 const wchar_t kLZMAResourceType[] = L"B7";
 
 // Registry key to get uninstall command
@@ skipping 22 matching lines @@
 const int kMaxResourceSize = 1024*1024*1024;
 
 // This is the file that contains the list of files to be linked in the
 // executable. This file is updated by the installer generator tool chain.
 const wchar_t kManifestFilename[] = L"packed_files.txt";
 
 }  // namespace mini_installer
 
 #endif  // CHROME_INSTALLER_MINI_INSTALLER_MINI_INSTALLER_H_