Reuse NativeThemeAuraDark for cros tray.

ash/common/system/status_area_widget.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 "ash/common/system/status_area_widget.h"
 
+#include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/system/overview/overview_button_tray.h"
 #include "ash/common/system/status_area_widget_delegate.h"
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/common/system/web_notification/web_notification_tray.h"
 #include "ash/common/wm_lookup.h"
 #include "ash/common/wm_root_window_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 #include "base/i18n/time_formatting.h"
+#include "ui/native_theme/native_theme_dark_aura.h"
 
 #if defined(OS_CHROMEOS)
 #include "ash/common/system/chromeos/ime_menu/ime_menu_tray.h"
 #include "ash/common/system/chromeos/palette/palette_tray.h"
 #include "ash/common/system/chromeos/session/logout_button_tray.h"
 #include "ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h"
 #endif
 
 namespace ash {
 
@@ skipping 102 matching lines @@
   system_tray_->SchedulePaint();
 #if defined(OS_CHROMEOS)
   virtual_keyboard_tray_->SchedulePaint();
   logout_button_tray_->SchedulePaint();
   ime_menu_tray_->SchedulePaint();
   palette_tray_->SchedulePaint();
 #endif
   overview_button_tray_->SchedulePaint();
 }
 
+const ui::NativeTheme* StatusAreaWidget::GetNativeTheme() const {
+  return MaterialDesignController::IsShelfMaterial()
+             ? ui::NativeThemeDarkAura::instance()
+             : Widget::GetNativeTheme();
+}
+
 void StatusAreaWidget::OnNativeWidgetActivationChanged(bool active) {
   Widget::OnNativeWidgetActivationChanged(active);
   if (active)
     status_area_widget_delegate_->SetPaneFocusAndFocusDefault();
 }
 
 void StatusAreaWidget::UpdateShelfItemBackground(int alpha) {
   web_notification_tray_->UpdateShelfItemBackground(alpha);
   system_tray_->UpdateShelfItemBackground(alpha);
 #if defined(OS_CHROMEOS)
@@ skipping 75 matching lines @@
     web_notification_tray_->UpdateAfterLoginStatusChange(login_status);
 #if defined(OS_CHROMEOS)
   if (logout_button_tray_)
     logout_button_tray_->UpdateAfterLoginStatusChange(login_status);
 #endif
   if (overview_button_tray_)
     overview_button_tray_->UpdateAfterLoginStatusChange(login_status);
 }
 
 }  // namespace ash