NaCl: Copy only the needed IRT architectures into the build directory

chrome/nacl.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': {
       'nacl_target': 0,
     },
     'target_conditions': [
@@ skipping 63 matching lines @@
         '../native_client/src/trusted/validator_x86/validator_x86.gyp:ncvalidate',
         '../native_client/src/trusted/platform_qualify/platform_qualify.gyp:platform_qual_lib',
       ],
       'direct_dependent_settings': {
         'defines': [
           'NACL_BLOCK_SHIFT=5',
           'NACL_BLOCK_SIZE=32',
           '<@(nacl_defines)',
         ],
       },
-      'copies': [
-        {
-          'destination': '<(PRODUCT_DIR)',
-          'files': [
-            '../native_client/irt_binaries/nacl_irt_x86_32.nexe',
-            '../native_client/irt_binaries/nacl_irt_x86_64.nexe',
-          ],
-        },
+      'conditions': [
+        ['target_arch=="ia32"', {
+           'copies': [
+             {
+               'destination': '<(PRODUCT_DIR)',
+               'files': [
+                 '../native_client/irt_binaries/nacl_irt_x86_32.nexe',
+               ],
+             },
+           ],
+        }],
+        ['target_arch=="x64" or OS=="win"', {
+           'copies': [
+             {
+               'destination': '<(PRODUCT_DIR)',
+               'files': [
+                 '../native_client/irt_binaries/nacl_irt_x86_64.nexe',
+               ],
+             },
+           ],
+        }],
       ],
     },
   ],
   'conditions': [
     ['OS=="win"', {
       'targets': [
         {
           'target_name': 'nacl_win64',
           'type': '<(library)',
           'msvs_guid': '14135464-9FB9-42E3-99D8-791116FA1204',
@@ skipping 27 matching lines @@
               'NACL_BLOCK_SHIFT=5',
               'NACL_BLOCK_SIZE=32',
               '<@(nacl_defines)',
             ],
           },
         },
       ],
     }],
   ],
 }