Nukes the gyp/gypi files in ui

ui/login/login.gyp

-# 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.
-
-{
-  'variables': {
-    'chromium_code': 1,
-    'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/ui/login',
-  },
-  'targets': [
-    {
-      # TODO bug 512913 support in GN.
-      'target_name': 'login_resources',
-      'type': 'none',
-      'actions': [
-        {
-          'action_name': 'login_resources',
-          'variables': {
-            'grit_grd_file': 'login_resources.grd',
-          },
-          'includes': [ '../../build/grit_action.gypi' ],
-        },
-      ],
-      'includes': [ '../../build/grit_target.gypi' ],
-      'copies': [
-        {
-          'destination': '<(PRODUCT_DIR)',
-          'files': [
-            '<(SHARED_INTERMEDIATE_DIR)/ui/login/login_resources.pak',
-          ],
-        },
-      ],
-    },
-  ],
-}