cros: Use runtime stylus detection for ash palette.

chrome/browser/ui/ash/chrome_shell_delegate.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/ash/chrome_shell_delegate.h"
 
 #include <stddef.h>
 
 #include <limits>
 
@@ skipping 518 matching lines @@
 ash::SessionStateDelegate* ChromeShellDelegate::CreateSessionStateDelegate() {
   return new SessionStateDelegateChromeos;
 }
 
 ash::AccessibilityDelegate* ChromeShellDelegate::CreateAccessibilityDelegate() {
   return new AccessibilityDelegateImpl;
 }
 
 std::unique_ptr<ash::PaletteDelegate>
 ChromeShellDelegate::CreatePaletteDelegate() {
-  return chromeos::PaletteDelegateChromeOS::Create();
+  return base::MakeUnique<chromeos::PaletteDelegateChromeOS>();
 }
 
 ash::SystemTrayDelegate* ChromeShellDelegate::CreateSystemTrayDelegate() {
   return chromeos::CreateSystemTrayDelegate();
 }
 
 std::unique_ptr<ash::WallpaperDelegate>
 ChromeShellDelegate::CreateWallpaperDelegate() {
   return base::WrapUnique(chromeos::CreateWallpaperDelegate());
 }
@@ skipping 27 matching lines @@
       NOTREACHED() << "Unexpected notification " << type;
   }
 }
 
 void ChromeShellDelegate::PlatformInit() {
   registrar_.Add(this, chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
                  content::NotificationService::AllSources());
   registrar_.Add(this, chrome::NOTIFICATION_SESSION_STARTED,
                  content::NotificationService::AllSources());
 }