Various IWYU fixes.

chrome/browser/shell_integration_win.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.
 
 #include "chrome/browser/shell_integration_win.h"
 
 #include <windows.h>
 #include <shlwapi.h>
 #include <shobjidl.h>
 #include <propkey.h>  // Needs to come after shobjidl.h.
@@ skipping 32 matching lines @@
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/browser/win/settings_app_monitor.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths_internal.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/shell_handler_win.mojom.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/install_static/install_util.h"
 #include "chrome/installer/setup/setup_util.h"
 #include "chrome/installer/util/browser_distribution.h"
-#include "chrome/installer/util/create_reg_key_work_item.h"
 #include "chrome/installer/util/install_util.h"
 #include "chrome/installer/util/scoped_user_protocol_entry.h"
-#include "chrome/installer/util/set_reg_value_work_item.h"
 #include "chrome/installer/util/shell_util.h"
-#include "chrome/installer/util/util_constants.h"
-#include "chrome/installer/util/work_item.h"
-#include "chrome/installer/util/work_item_list.h"
 #include "components/variations/variations_associated_data.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/utility_process_mojo_client.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using content::BrowserThread;
 
 namespace shell_integration {
 
 namespace {
@@ skipping 784 matching lines @@
             base::win::SHORTCUT_UPDATE_EXISTING)) {
       ++shortcuts_migrated;
     }
   }
   return shortcuts_migrated;
 }
 
 }  // namespace win
 
 }  // namespace shell_integration