Support migrating multi-install Chrome to single-install.

chrome/installer/util/installer_state.h

 // Copyright (c) 2012 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_INSTALLER_UTIL_INSTALLER_STATE_H_
 #define CHROME_INSTALLER_UTIL_INSTALLER_STATE_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 174 matching lines @@
   // than |new_version| and not equal to |existing_version|. |existing_version|
   // may be NULL.
   void RemoveOldVersionDirectories(const base::Version& new_version,
                                    base::Version* existing_version,
                                    const base::FilePath& temp_path) const;
 
   // Adds to |com_dll_list| the list of COM DLLs that are to be registered
   // and/or unregistered. The list may be empty.
   void AddComDllList(std::vector<base::FilePath>* com_dll_list) const;
 
-  bool SetChannelFlags(bool set, ChannelInfo* channel_info) const;
-
   // See InstallUtil::UpdateInstallerStage.
   void UpdateStage(installer::InstallerStage stage) const;
 
   // For a MULTI_INSTALL or MULTI_UPDATE operation, updates the Google Update
   // "ap" values for all products being operated on.
   void UpdateChannels() const;
 
   // Sets installer result information in the registry for consumption by Google
   // Update.  The InstallerResult value is set to 0 (SUCCESS) or 1
   // (FAILED_CUSTOM_ERROR) depending on whether |status| maps to success or not.
@@ skipping 69 matching lines @@
   bool verbose_logging_;
   bool ensure_google_update_present_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InstallerState);
 };  // class InstallerState
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_INSTALLER_STATE_H_