Build only the appropriate x86 arches for nacl (chrome side).

ppapi/native_client/native_client.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.
 
 {
   'includes': [
     '../../build/common_untrusted.gypi',
   ],
   'conditions': [
     ['disable_nacl==0 and disable_nacl_untrusted==0', {
@@ skipping 27 matching lines @@
           'conditions': [
             ['target_arch=="ia32" or target_arch=="x64"', {
               'copies': [
                 {
                   'destination': '>(tc_include_dir_glibc)/include/nacl',
                   'files': [
                     'src/trusted/weak_ref/call_on_main_thread.h',
                     'src/shared/ppapi_proxy/ppruntime.h',
                   ],
                 },
+              ],
+            }],
+            ['target_arch=="ia32"', {
+              'copies': [
                 # Here we copy linker scripts out of the Native Client repo..
                 # These are source, not build artifacts.
                 {
                   'destination': '>(tc_lib_dir_newlib32)',
                   'files': [
                     'src/untrusted/irt_stub/libppapi.a',
                   ],
                 },
                 {
-                  'destination': '>(tc_lib_dir_newlib64)',
-                  'files': [
-                    'src/untrusted/irt_stub/libppapi.a',
-                  ],
-                },
-                {
                   'destination': '>(tc_lib_dir_glibc32)',
                   'files': [
                     'src/untrusted/irt_stub/libppapi.a',
                     'src/untrusted/irt_stub/libppapi.so',
                   ],
                 },
+              ],
+            }],
+            ['target_arch=="x64" or (target_arch=="ia32" and OS=="win")', {
+              'copies': [
                 {
+                  'destination': '>(tc_lib_dir_newlib64)',
+                  'files': [
+                    'src/untrusted/irt_stub/libppapi.a',
+                  ],
+                },
+                {
                   'destination': '>(tc_lib_dir_glibc64)',
                   'files': [
                     'src/untrusted/irt_stub/libppapi.a',
                     'src/untrusted/irt_stub/libppapi.so',
                   ],
                 },
               ]
             }],
             ['target_arch=="arm"', {
               'copies': [
@@ skipping 190 matching lines @@
             '../../native_client/src/shared/platform/platform.gyp:platform_lib',
             '../../native_client/src/tools/tls_edit/tls_edit.gyp:tls_edit#host',
             '../../native_client/src/untrusted/nacl/nacl.gyp:imc_syscalls_lib',
             '../../native_client/src/shared/gio/gio.gyp:gio_lib',
           ],
         },
       ],
     }],
   ],
 }