NaCl: Conditionalise copying of IRT library based on "disable_nacl" flag

chrome/chrome_exe.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.
 
 {
   'target_defaults': {
     'variables': {
       'chrome_exe_target': 0,
     },
     'target_conditions': [
@@ skipping 130 matching lines @@
   'targets': [
     {
       'target_name': 'chrome',
       'type': 'executable',
       'mac_bundle': 1,
       'msvs_guid': '7B219FAA-E360-43C8-B341-804A94EEFFAC',
       'variables': {
         'chrome_exe_target': 1,
         'use_system_xdg_utils%': 0,
       },
-      'copies': [
-        {
-          'destination': '<(PRODUCT_DIR)',
-          'files': [
-            '../native_client/irt_binaries/nacl_irt_x86_32.nexe',
-            '../native_client/irt_binaries/nacl_irt_x86_64.nexe',
-          ],
-        },
-      ],
       'conditions': [
         ['OS=="linux" or OS=="freebsd" or OS=="openbsd"', {
           'actions': [
             {
               'action_name': 'manpage',
               'conditions': [
                 [ 'branding == "Chrome"', {
                   'variables': {
                     'name': 'Google Chrome',
                     'filename': 'google-chrome',
@@ skipping 295 matching lines @@
             'app/locales/locales.gyp:*',
             'app/policy/cloud_policy_codegen.gyp:policy',
           ],
           'msvs_settings': {
             'VCLinkerTool': {
               'ImportLibrary': '$(OutDir)\\lib\\chrome_exe.lib',
               'ProgramDatabaseFile': '$(OutDir)\\chrome_exe.pdb',
             },
           },
         }],
+        ['disable_nacl!=1', {
+          'copies': [
+            {
+              'destination': '<(PRODUCT_DIR)',
+              'files': [
+                '../native_client/irt_binaries/nacl_irt_x86_32.nexe',
+                '../native_client/irt_binaries/nacl_irt_x86_64.nexe',
+              ],
+            },
+          ],
+        }],
       ],
     },
     {
       'target_name': 'chrome_mesa',
       'type': 'none',
       'dependencies': [
         'chrome',
         '../third_party/mesa/mesa.gyp:osmesa',
       ],
       'conditions': [
@@ skipping 45 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }