Purge the App Launcher code from Windows.

chrome/installer/setup/uninstall.cc

 // 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 defines the methods useful for uninstalling Chrome.
 
 #include "chrome/installer/setup/uninstall.h"
 
 #include <windows.h>
 #include <stddef.h>
@@ skipping 12 matching lines @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/registry.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/shortcut.h"
 #include "base/win/windows_version.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_result_codes.h"
 #include "chrome/installer/setup/app_launcher_installer.h"

[grt (UTC plus 2), 2016/08/02 07:28:21]

is this now unused? please remove if so.

 #include "chrome/installer/setup/install.h"
 #include "chrome/installer/setup/install_worker.h"
 #include "chrome/installer/setup/setup_constants.h"
 #include "chrome/installer/setup/setup_util.h"
 #include "chrome/installer/setup/user_hive_visitor.h"
 #include "chrome/installer/util/auto_launch_util.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "chrome/installer/util/channel_info.h"
 #include "chrome/installer/util/delete_after_reboot_helper.h"
 #include "chrome/installer/util/firewall_manager_win.h"
@@ skipping 1102 matching lines @@
   if (is_chrome) {
     const base::string16 suffix(
         ShellUtil::GetCurrentInstallationSuffix(browser_dist, chrome_exe));
 
     // Remove all Chrome registration keys.
     // Registration data is put in HKCU for both system level and user level
     // installs.
     DeleteChromeRegistrationKeys(installer_state, browser_dist,
                                  HKEY_CURRENT_USER, suffix, &ret);
 
-#if defined(GOOGLE_CHROME_BUILD)
-    if (!InstallUtil::IsChromeSxSProcess())
-      RemoveAppLauncherVersionKey(reg_root);
-#endif  // GOOGLE_CHROME_BUILD
-
     // If the user's Chrome is registered with a suffix: it is possible that old
     // unsuffixed registrations were left in HKCU (e.g. if this install was
     // previously installed with no suffix in HKCU (old suffix rules if the user
     // is not an admin (or declined UAC at first run)) and later had to be
     // suffixed when fully registered in HKLM (e.g. when later making Chrome
     // default through the UI)).
     // Remove remaining HKCU entries with no suffix if any.
     if (!suffix.empty()) {
       DeleteChromeRegistrationKeys(installer_state, browser_dist,
                                    HKEY_CURRENT_USER, base::string16(), &ret);
@@ skipping 208 matching lines @@
     // If we need a reboot to continue, schedule the parent directories for
     // deletion unconditionally. If they are not empty, the session manager
     // will not delete them on reboot.
     ScheduleParentAndGrandparentForDeletion(target_path);
   } else if (DeleteChromeDirectoriesIfEmpty(target_path) == DELETE_FAILED) {
     *uninstall_status = UNINSTALL_FAILED;
   }
 }
 
 }  // namespace installer