Include the mode switch when elevating to register Chrome.

chrome/installer/util/shell_util.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 functions that integrate Chrome in Windows shell. These
 // functions can be used by Chrome as well as Chrome installer. All of the
 // work is done by the local functions defined in anonymous namespace in
 // this class.
 
 #include "chrome/installer/util/shell_util.h"
@@ skipping 692 matching lines @@
                dist->GetStateKey().c_str(), KEY_QUERY_VALUE | KEY_WOW64_32KEY);
     base::string16 uninstall_string;
     if (key.ReadValue(installer::kUninstallStringField, &uninstall_string) ==
         ERROR_SUCCESS) {
       exe_path = base::FilePath(uninstall_string);
     }
   }
 
   if (base::PathExists(exe_path)) {
     base::CommandLine cmd(exe_path);
+    InstallUtil::AppendModeSwitch(&cmd);
     if (!is_per_user)
       cmd.AppendSwitch(installer::switches::kSystemLevel);
     cmd.AppendSwitchPath(installer::switches::kRegisterChromeBrowser,
                          chrome_exe);
     if (!suffix.empty()) {
       cmd.AppendSwitchNative(
           installer::switches::kRegisterChromeBrowserSuffix, suffix);
     }
 
     if (!protocol.empty()) {
@@ skipping 1620 matching lines @@
   for (const auto& entry : entries)
     entry->AddToWorkItemList(root, items.get());
 
   // Apply all the registry changes and if there is a problem, rollback
   if (!items->Do()) {
     items->Rollback();
     return false;
   }
   return true;
 }