Use InstallDetails in setup.

chrome/install_static/install_modes.h

 // Copyright 2016 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.
 
 // This file declares constants that describe specifics of a Chromium-based
 // browser's branding and modes of installation.
 //
 // A browser's brand comprises all identifying markings that distinguish it from
 // a browser produced by another party. Chromium has remnants of both the
 // Chromium and Google Chrome brands.
 //
 // Each brand defines one primary install mode for the browser. A brand may
 // additionally define one or more secondary install modes (e.g., Google
 // Chrome's SxS mode for the canary channel). Install modes are described by
 // compile-time instantiations of the `InstallConstants` struct in a brand's
 // `kInstallModes` array. Index 0 of this array always describes the primary
 // install mode. All other entries describe secondary modes, which are
 // distinguished by an install suffix (e.g., " SxS") that appears in file and
 // registry paths.

[robertshield, 2017/02/20 19:11:16]

Can you go into a little more detail here (or elsewhere if there's somewhere
more appropriate) about:

* whether it is valid for a brand to have installed only a secondary mode or
only multiple secondary modes?
* any other practical differences in the way a primary mode installation is
treated vs secondary modes. 

[grt (UTC plus 2), 2017/02/21 13:21:15]

Added some text. Let me know if you had something different in mind.

[robertshield, 2017/02/21 14:28:20]

Looks great, thanks!

 
 #ifndef CHROME_INSTALL_STATIC_INSTALL_MODES_H_
 #define CHROME_INSTALL_STATIC_INSTALL_MODES_H_
 
 #include <string>
 
 #include "chrome/install_static/install_constants.h"
 
 // Include the brand-specific values. Each of these must define:
 // - enum InstallConstantIndex: named indices of the brand's kInstallModes
@@ skipping 35 matching lines @@
 // A brand's collection of install modes.
 extern const InstallConstants kInstallModes[];
 
 // The following convenience functions behave conditionally on whether or not
 // the brand uses Chrome's integration with Google Update. For brands that do
 // not (e.g., Chromium), they return something like "Software\Chromium" or
 // "Software\Chromium Binaries". Otherwise, for brands that do integrate with
 // Google Update, they return something like
 // "Software\Google\Update\ClientState{Medium}\<guid>" where "<guid>" is either
 // |mode|'s appguid or the brand's kBinariesAppGuid.
+std::wstring GetClientsKeyPath(const wchar_t* app_guid);
 std::wstring GetClientStateKeyPath(const wchar_t* app_guid);
+std::wstring GetClientStateMediumKeyPath(const wchar_t* app_guid);
+std::wstring GetBinariesClientsKeyPath();
 std::wstring GetBinariesClientStateKeyPath();
-std::wstring GetClientStateMediumKeyPath(const wchar_t* app_guid);
 std::wstring GetBinariesClientStateMediumKeyPath();
 
 }  // namespace install_static
 
 #endif  // CHROME_INSTALL_STATIC_INSTALL_MODES_H_