Enable x64 Chromoting host and installer

remoting/remoting_host_win.gypi

 # 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': {
     'remoting_host_installer_win_roots': [
       'host/installer/win/',
     ],
     'remoting_host_installer_win_files': [
@@ skipping 491 matching lines @@
               'inputs': [
                 'tools/zip2msi.py',
               ],
               'outputs': [
                 '<(PRODUCT_DIR)/chromoting.msi',
               ],
               'action': [
                 'python', 'tools/zip2msi.py',
                 '--wix_path', '<(wix_path)',
                 '--intermediate_dir', '<(INTERMEDIATE_DIR)/installation',
+                '--target_arch', '<(target_arch)',
                 '<(RULE_INPUT_PATH)',
                 '<@(_outputs)',
               ],
               'message': 'Generating <@(_outputs)',
             },
           ],
         },  # end of target 'remoting_host_installation'
 
         {
           'target_name': 'remoting_me2me_host_archive',
@@ skipping 86 matching lines @@
                 '--defs', '<@(_defs)',
               ],
             },
           ],  # actions
         }, # end of target 'remoting_me2me_host_archive'
       ],  # end of 'targets'
     }],  # '<(wix_path) != ""'
 
   ],  # end of 'conditions'
 }