Use InstallDetails in setup.

chrome/install_static/install_details.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.
 
 #ifndef CHROME_INSTALL_STATIC_INSTALL_DETAILS_H_
 #define CHROME_INSTALL_STATIC_INSTALL_DETAILS_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 47 matching lines @@
   InstallDetails& operator=(const InstallDetails&) = delete;
   virtual ~InstallDetails() = default;
 
   // Returns the instance for this module.
   static const InstallDetails& Get();
 
   // This mode's index into the brand's array of install modes. This will match
   // a brand-specific InstallConstantIndex enumerator.
   int install_mode_index() const { return payload_->mode->index; }
 
+  // Returns true if the current mode is the brand's primary install mode rather
+  // than one of its secondary modes (e.g., canary Chrome).
+  bool is_primary_mode() const { return install_mode_index() == 0; }
+
   // The mode's install suffix (e.g., " SxS" for canary Chrome), or an empty
   // string for a brand's primary install mode.
   const wchar_t* install_suffix() const {
     return payload_->mode->install_suffix;
   }
 
+  // The mode's logo suffix (e.g., "Canary" for canary Chrome), or an empty
+  // string for a brand's primary install mode.
+  const wchar_t* logo_suffix() const { return payload_->mode->logo_suffix; }
+
   // Returns the full name of the installed product (e.g. "Chrome SxS" for
   // canary chrome).
   std::wstring install_full_name() const {
     return std::wstring(kProductPathName, kProductPathNameLength)
         .append(install_suffix());
   }
 
   const InstallConstants& mode() const { return *payload_->mode; }
 
   // The app GUID with which this mode is registered with Google Update, or an
   // empty string if this brand does not integrate with Google Update.
   const wchar_t* app_guid() const { return payload_->mode->app_guid; }
 
   // True if the mode supports installation at system-level.
   bool supports_system_level() const {
     return payload_->mode->supports_system_level;
   }
 
   // True if the mode once supported multi-install.

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

Maybe expand this to 

"True if the mode once supported multi-install, a legacy way of doing installs.
This still exists only to provide migration and cleanup for older installs."

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

Done.

   bool supported_multi_install() const {
     return payload_->mode->supported_multi_install;
   }
 
   // The install's update channel, or an empty string if the brand does not
   // integrate with Google Update.
   std::wstring channel() const {
     return std::wstring(payload_->channel, payload_->channel_length);
   }
   bool system_level() const { return payload_->system_level; }
@@ skipping 64 matching lines @@
   }
 
  private:
   std::wstring channel_;
   Payload payload_ = Payload();
 };
 
 }  // namespace install_static
 
 #endif  // CHROME_INSTALL_STATIC_INSTALL_DETAILS_H_