[Chromoting] Disable building 64bit chromoting.msi file.

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 545 matching lines @@
         },
       ],
     },  # end of target 'remoting_windows_resources'
   ],  # end of 'targets'
 
   'conditions': [
     # The host installation is generated only if WiX is available. If
     # component build is used the produced installation will not work due to
     # missing DLLs. We build it anyway to make sure the GYP scripts are executed
     # by the bots.
-    ['wix_exists == "True"', {
+    # We do not release a 64 bits binary. So to avoid any potential
+    # misunderstanding, we only build 32 bits MSI file.
+    ['wix_exists == "True" and target_arch == "ia32"', {
       'targets': [
         {
           'target_name': 'remoting_host_installation',
           'type': 'none',
           'dependencies': [
             'remoting_me2me_host_archive',
           ],
           'sources': [
             '<(PRODUCT_DIR)/remoting-me2me-host-<(OS).zip',
           ],
@@ skipping 132 matching lines @@
 
         {
           'target_name': 'remoting_me2me_host_archive',
           'type': 'none',
         },
       ],  # end of 'targets'
     }],  # 'wix_exists == "True"
 
   ],  # end of 'conditions'
 }