chromeos: Remove UpdateLibrary code, which is no longer used.

chrome/chrome_browser.gypi

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 406 matching lines @@
         'browser/chromeos/cros/network_library.cc',
         'browser/chromeos/cros/network_library.h',
         'browser/chromeos/cros/network_parser.cc',
         'browser/chromeos/cros/network_parser.h',
         'browser/chromeos/cros/onc_network_parser.cc',
         'browser/chromeos/cros/onc_network_parser.h',
         'browser/chromeos/cros/power_library.cc',
         'browser/chromeos/cros/power_library.h',
         'browser/chromeos/cros/screen_lock_library.cc',
         'browser/chromeos/cros/screen_lock_library.h',
-        'browser/chromeos/cros/update_library.cc',
-        'browser/chromeos/cros/update_library.h',
         'browser/chromeos/cros_settings.cc',
         'browser/chromeos/cros_settings.h',
         'browser/chromeos/cros_settings_names.cc',
         'browser/chromeos/cros_settings_names.h',
         'browser/chromeos/cros_settings_provider.cc',
         'browser/chromeos/cros_settings_provider.h',
         'browser/chromeos/cros_stubs_aura.cc',
         'browser/chromeos/customization_document.cc',
         'browser/chromeos/customization_document.h',
         'browser/chromeos/dbus/bluetooth_adapter_client.cc',
@@ skipping 4861 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/history/in_memory_url_index_cache.proto' ],
       'variables': {
         'proto_in_dir': 'browser/history',
         'proto_out_dir': 'chrome/browser/history',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }