Move brand- and mode-specific app icon resource id into InstallConstants.

chrome/install_static/install_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 each of a brand's install modes; see
 // install_modes.h for details. For brands that integrate with Google Update,
 // each mode also describes a strategy for determining its update channel.
 
 #ifndef CHROME_INSTALL_STATIC_INSTALL_CONSTANTS_H_
 #define CHROME_INSTALL_STATIC_INSTALL_CONSTANTS_H_
 
+#include <stdint.h>
+
 namespace install_static {
 
 // Identifies different strategies for determining an update channel.
 enum class ChannelStrategy {
   // Update channels are not supported. This value is for exclusive use by
   // brands that do not integrate with Google Update.
   UNSUPPORTED,
   // Update channel is determined by parsing the "ap" value in the registry.
   // This is used by Google Chrome's primary install mode to differentiate the
   // beta and dev channels from the default stable channel.
@@ skipping 40 matching lines @@
 
   // The strategy used to determine the mode's update channel, or UNSUPPORTED if
   // the brand does not integrate with Google Update.
   ChannelStrategy channel_strategy;
 
   // True if this mode supports system-level installs.
   bool supports_system_level;
 
   // True if this mode supported the now-deprecated multi-install.
   bool supported_multi_install;
+
+  // The resource id of this mode's main application icon.
+  int16_t app_icon_resource_id;
 };
 
 }  // namespace install_static
 
 #endif  // CHROME_INSTALL_STATIC_INSTALL_CONSTANTS_H_