Revert of Windows install_static refactor.

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_
-
-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.
-  ADDITIONAL_PARAMETERS,
-  // Update channel is a fixed value. This is used by to pin Google Chrome's SxS
-  // secondary install mode to the canary channel.
-  FIXED,
-};
-
-// A POD-struct defining constants for a brand's install mode. A brand has one
-// primary and one or more secondary install modes. Refer to kInstallModes in
-// chromium_install_modes.cc and google_chrome_install_modes.cc for examples of
-// typical mode definitions.
-struct InstallConstants {
-  // The size (in bytes) of this structure. This serves to verify that all
-  // modules in a process have the same definition of the struct.
-  size_t size;
-
-  // The brand-specific index/identifier of this instance (defined in a brand's
-  // BRAND_install_modes.h file). Index 0 is reserved for a brand's primary
-  // install mode.
-  int index;
-
-  // The install suffix of a secondary mode (e.g., " SxS" for canary Chrome) or
-  // an empty string for the primary mode. This suffix is appended to file and
-  // registry paths used by the product.
-  const wchar_t* install_suffix;
-
-  // The app guid with which this mode is registered with Google Update, or an
-  // empty string if the brand does not integrate with Google Update.
-  const wchar_t* app_guid;
-
-  // The default name for this mode's update channel.
-  const wchar_t* default_channel_name;
-
-  // 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 supports multi-install.
-  bool supports_multi_install;
-};
-
-}  // namespace install_static
-
-#endif  // CHROME_INSTALL_STATIC_INSTALL_CONSTANTS_H_