Use InstallDetails in setup.

chrome/installer/setup/brand_constants.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.
+
+// Defines the struct used to describe installer specific corresponding to each

[robertshield, 2016/11/04 12:50:35]

Maybe: 

"Defines the struct describing installer details for each of a brand's install
modes; ..."

[grt (UTC plus 2), 2016/11/08 13:02:13]

Done.

+// of a brand's install modes; see chrome/install_static/install_modes.h for
+// details.
+
+#ifndef CHROME_INSTALLER_SETUP_BRAND_CONSTANTS_H_
+#define CHROME_INSTALLER_SETUP_BRAND_CONSTANTS_H_
+
+#include "base/strings/string16.h"
+
+struct BrandConstants {
+  // The brand-specific index/identifier of this instance (defined in a brand's
+  // chrome/install_static/BRAND_install_modes.h file). Index 0 is reserved for
+  // a brand's primary install mode.
+  int index;
+
+  // The command-line switch used to select this install mode.

[robertshield, 2016/11/04 12:50:35]

Worth specifying who uses the switch?

"The command-line switch originally passed to the installer to select this
install mode?"

[grt (UTC plus 2), 2016/11/08 13:02:13]

Done.

+  const char* install_switch;
+
+  // The suffix for the logos corresponding to this install mode for use in the
+  // Start Menu.

[robertshield, 2016/11/04 12:50:35]

s/logos/start menu entries?

Maybe call it start_menu_suffix too? Unless it's also used elsewhere?

[grt (UTC plus 2), 2016/11/08 13:02:13]

It really is the suffix of the artwork files referenced in
chrome.VisualElementsManifest.xml, which is generated at install-time, and not
the entries in the start menu. I'll update the comment a bit.

+  const base::char16* logo_suffix;
+
+  // True if this mode supported the (now removed) app host and launcher.

[robertshield, 2016/11/04 12:50:35]

if this mode ever supported?

[grt (UTC plus 2), 2016/11/08 13:02:13]

Done.

+  bool supported_app_launcher;
+};
+
+// A brand's collection of constants correspoding to each install mode.
+extern const BrandConstants kBrandConstants[];
+
+// Returns the constants for the current install mode.
+const BrandConstants& GetBrandConstants();
+
+#endif  // CHROME_INSTALLER_SETUP_BRAND_CONSTANTS_H_