Updates to Ash material design icons used for TrayImageItem

ash/common/system/tray/default_system_tray_delegate.cc

 // Copyright 2013 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/tray/default_system_tray_delegate.h"
 
 #include <string>
 #include <utility>
 
 #include "ash/common/system/networking_config_delegate.h"
@@ skipping 21 matching lines @@
     return std::string();
   return "manager@chrome.com";
 }
 
 bool DefaultSystemTrayDelegate::IsUserSupervised() const {
   return GetUserLoginStatus() == LoginStatus::SUPERVISED;
 }
 
 void DefaultSystemTrayDelegate::GetSystemUpdateInfo(UpdateInfo* info) const {
   DCHECK(info);
-  info->severity = UpdateInfo::UPDATE_NORMAL;
+  info->severity = UpdateInfo::UPDATE_NONE;
   info->update_required = true;
   info->factory_reset_required = false;
 }
 
 bool DefaultSystemTrayDelegate::ShouldShowSettings() {
   return true;
 }
 
 bool DefaultSystemTrayDelegate::ShouldShowDisplayNotification() {
   return false;
@@ skipping 28 matching lines @@
     std::unique_ptr<VolumeControlDelegate> delegate) {
   volume_control_delegate_ = std::move(delegate);
 }
 
 int DefaultSystemTrayDelegate::GetSystemTrayMenuWidth() {
   // This is the default width for English languages.
   return 300;
 }
 
 }  // namespace ash