Clean up unused grit header includes in ash/.

ash/system/tray_accessibility.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/system/tray_accessibility.h"
 
 #include <memory>
 #include <utility>
 
 #include "ash/accessibility_delegate.h"
@@ skipping 12 matching lines @@
 #include "ash/system/tray/tray_details_view.h"
 #include "ash/system/tray/tray_item_more.h"
 #include "ash/system/tray/tray_popup_utils.h"
 #include "ash/system/tray/tri_view.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/gfx/vector_icon_types.h"
 #include "ui/message_center/message_center.h"
 #include "ui/native_theme/native_theme.h"
-#include "ui/resources/grit/ui_resources.h"
 #include "ui/views/controls/separator.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 namespace {
 
 const char kNotificationId[] = "chrome://settings/accessibility";
 
 enum AccessibilityState {
   A11Y_NONE = 0,
@@ skipping 436 matching lines @@
           gfx::Image(gfx::CreateVectorIcon(GetNotificationIcon(being_enabled),
                                            kMenuIconSize, kMenuIconColor)),
           base::string16(), GURL(),
           message_center::NotifierId(message_center::NotifierId::APPLICATION,
                                      system_notifier::kNotifierAccessibility),
           message_center::RichNotificationData(), nullptr);
   message_center->AddNotification(std::move(notification));
 }
 
 }  // namespace ash