Makes construction of (ash)RemoteWindowTreeHostWin explicit

chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.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/ui/views/ash/chrome_browser_main_extra_parts_ash.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/session/session_state_delegate.h"
 #include "ash/shell.h"
 #include "base/command_line.h"
@@ skipping 49 matching lines @@
 #endif
 
 ChromeBrowserMainExtraPartsAsh::ChromeBrowserMainExtraPartsAsh() {
 }
 
 ChromeBrowserMainExtraPartsAsh::~ChromeBrowserMainExtraPartsAsh() {
 }
 
 void ChromeBrowserMainExtraPartsAsh::PreProfileInit() {
   if (chrome::ShouldOpenAshOnStartup()) {
-    chrome::OpenAsh();
+    chrome::OpenAsh(gfx::kNullAcceleratedWidget);
   } else {
 #if !defined(OS_CHROMEOS)
     gfx::Screen::SetScreenTypeDelegate(new ScreenTypeDelegateWin);
     ui::SelectFileDialog::SetShellDialogsDelegate(
         g_shell_dialogs_delegate.Pointer());
 #endif
   }
 #if defined(OS_CHROMEOS)
   // For OS_CHROMEOS, virtual keyboard needs to be initialized before profile
   // initialized. Otherwise, virtual keyboard extension will not load at login
@@ skipping 17 matching lines @@
   // activation to UpdateWindow() in virtual_keyboard_window_controller.cc.
   if (!keyboard::IsKeyboardUsabilityExperimentEnabled()) {
     ash::Shell::GetPrimaryRootWindowController()->ActivateKeyboard(
         keyboard::KeyboardController::GetInstance());
   }
 }
 
 void ChromeBrowserMainExtraPartsAsh::PostMainMessageLoopRun() {
   chrome::CloseAsh();
 }