Add fixing of MSI DisplayVersion to Chrome installs/updates.

chrome/installer/setup/install_worker.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.
 //
 // This file contains the declarations of the installer functions that build
 // the WorkItemList used to install the application.
 
 #ifndef CHROME_INSTALLER_SETUP_INSTALL_WORKER_H_
 #define CHROME_INSTALLER_SETUP_INSTALL_WORKER_H_
 
@@ skipping 176 matching lines @@
                                      const base::FilePath& setup_path,
                                      const base::Version& new_version,
                                      const Product& product,
                                      WorkItemList* work_item_list);
 
 // Adds work items to remove "quick-enable-cf" from the multi-installer
 // binaries' version key.
 void AddQuickEnableChromeFrameWorkItems(const InstallerState& installer_state,
                                         WorkItemList* work_item_list);
 
+// Exposed only for testing. There is almost zero chance you want to call this.
+base::string16 ConvertGUIDToMSIUserDataFormat(const base::string16& guid);
+
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_SETUP_INSTALL_WORKER_H_