Remove calls to deprecated MessageLoop methods on Windows and Linux.

ui/shell_dialogs/select_file_dialog_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 "ui/shell_dialogs/select_file_dialog_win.h"
 
 #include <shlobj.h>
 #include <stddef.h>
 
 #include <algorithm>
 #include <set>
 #include <tuple>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/i18n/case_conversion.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/threading/thread.h"
 #include "base/win/registry.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/shortcut.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/win/open_file_name_win.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 296 matching lines @@
     void* params) {
   has_multiple_file_type_choices_ =
       file_types ? file_types->extensions.size() > 1 : true;
   HWND owner = owning_window && owning_window->GetRootWindow()
       ? owning_window->GetHost()->GetAcceleratedWidget() : NULL;
 
   ExecuteSelectParams execute_params(type, title,
                                      default_path, file_types, file_type_index,
                                      default_extension, BeginRun(owner),
                                      owner, params);
-  execute_params.run_state.dialog_thread->message_loop()->PostTask(
-      FROM_HERE,
-      base::Bind(&SelectFileDialogImpl::ExecuteSelectFile, this,
-                 execute_params));
+  execute_params.run_state.dialog_thread->task_runner()->PostTask(
+      FROM_HERE, base::Bind(&SelectFileDialogImpl::ExecuteSelectFile, this,
+                            execute_params));
 }
 
 bool SelectFileDialogImpl::HasMultipleFileTypeChoicesImpl() {
   return has_multiple_file_type_choices_;
 }
 
 bool SelectFileDialogImpl::IsRunning(gfx::NativeWindow owning_window) const {
   if (!owning_window->GetRootWindow())
     return false;
   HWND owner = owning_window->GetHost()->GetAcceleratedWidget();
@@ skipping 357 matching lines @@
 
 SelectFileDialog* CreateSelectFileDialog(SelectFileDialog::Listener* listener,
                                          SelectFilePolicy* policy) {
   return CreateWinSelectFileDialog(listener,
                                    policy,
                                    base::Bind(&CallBuiltinGetOpenFileName),
                                    base::Bind(&CallBuiltinGetSaveFileName));
 }
 
 }  // namespace ui