cros: Use runtime stylus detection for ash palette.

chrome/browser/ui/webui/settings/md_settings_ui.cc

 // Copyright 2015 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/webui/settings/md_settings_ui.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 132 matching lines @@
 #if defined(OS_CHROMEOS)
   chromeos::settings::EasyUnlockSettingsHandler* easy_unlock_handler =
       chromeos::settings::EasyUnlockSettingsHandler::Create(html_source,
                                                             profile);
   if (easy_unlock_handler)
     AddSettingsPageUIHandler(base::WrapUnique(easy_unlock_handler));
 
   AddSettingsPageUIHandler(base::WrapUnique(
       chromeos::settings::DateTimeHandler::Create(html_source)));
 
-  html_source->AddBoolean("stylusAllowed", ash::IsPaletteFeatureEnabled());
+  html_source->AddBoolean("stylusAllowed", ash::HasStylusInput());

[stevenjb, 2017/01/21 00:23:50]

Observer in case it changes?

[jdufault, 2017/01/25 00:53:15]

See above comment

   html_source->AddBoolean("pinUnlockEnabled",
                           chromeos::IsPinUnlockEnabled(profile->GetPrefs()));
   html_source->AddBoolean(
       "androidAppsAllowed",
       arc::ArcSessionManager::IsAllowedForProfile(profile) &&
           !arc::ArcSessionManager::IsOptInVerificationDisabled());
 
   // TODO(mash): Support Chrome power settings in Mash. crbug.com/644348
   bool enable_power_settings =
       !chrome::IsRunningInMash() &&
@@ skipping 50 matching lines @@
   UMA_HISTOGRAM_TIMES("Settings.LoadDocumentTime.MD",
                       base::Time::Now() - load_start_time_);
 }
 
 void MdSettingsUI::DocumentOnLoadCompletedInMainFrame() {
   UMA_HISTOGRAM_TIMES("Settings.LoadCompletedTime.MD",
                       base::Time::Now() - load_start_time_);
 }
 
 }  // namespace settings