Materialized the font/icon color for some default rows in the system menu.

ash/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
 
 assert(use_aura)
@@ skipping 364 matching lines @@
     "common/system/tray/tray_item_view.cc",
     "common/system/tray/tray_item_view.h",
     "common/system/tray/tray_notification_view.cc",
     "common/system/tray/tray_notification_view.h",
     "common/system/tray/tray_popup_header_button.cc",
     "common/system/tray/tray_popup_header_button.h",
     "common/system/tray/tray_popup_item_container.cc",
     "common/system/tray/tray_popup_item_container.h",
     "common/system/tray/tray_popup_item_style.cc",
     "common/system/tray/tray_popup_item_style.h",
-    "common/system/tray/tray_popup_item_style_observer.h",
     "common/system/tray/tray_popup_label_button.cc",
     "common/system/tray/tray_popup_label_button.h",
     "common/system/tray/tray_popup_label_button_border.cc",
     "common/system/tray/tray_popup_label_button_border.h",
     "common/system/tray/tray_utils.cc",
     "common/system/tray/tray_utils.h",
     "common/system/tray/view_click_listener.h",
     "common/system/tray_accessibility.cc",
     "common/system/tray_accessibility.h",
     "common/system/update/tray_update.cc",
@@ skipping 1249 matching lines @@
   if (is_win) {
     configs -= [ "//build/config/win:console" ]
     configs += [ "//build/config/win:windowed" ]
     deps += [ "//sandbox" ]
   }
 
   if (is_chromeos) {
     deps += [ "//device/bluetooth" ]
   }
 }