Add cloud_print to the GN build.

cloud_print/virtual_driver/win/install/virtual_driver_install.gyp

 # 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.
 
 {
   'target_defaults': {
     'variables': {
       'chromium_code': 1,
     },
     'include_dirs': [
       '<(DEPTH)',
     ],
   },
   'targets' : [
     {
+      # GN version: //cloud_print/virtual_driver/win/install:virtual_driver_setup
       'target_name': 'virtual_driver_setup',
       'type': 'executable',
       'include_dirs': [
         # To allow including "version.h"
         '<(SHARED_INTERMEDIATE_DIR)',
       ],
       'dependencies': [
         '../virtual_driver.gyp:virtual_driver_lib',
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/cloud_print/common/common.gyp:cloud_print_install_lib',
@@ skipping 69 matching lines @@
       'copies': [
         {
           'destination': '<(PRODUCT_DIR)',
           'files': [
             '../../gcp_driver.gpd',
           ],
         },
       ],
     },
     {
+      # GN version: //cloud_print/virtual_driver/win/install:resources
       'target_name': 'virtual_driver_setup_resources',
       'type': 'none',
       'variables': {
         'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/virtual_driver_setup_resources',
       },
       'actions': [
         {
           'action_name': 'virtual_driver_setup_resources',
           'variables': {
             'grit_grd_file': 'virtual_driver_setup_resources.grd',
           },
           'includes': [ '../../../../build/grit_action.gypi' ],
         },
       ],
       'includes': [ '../../../../build/grit_target.gypi' ],
     },
   ],
 }