Re-enable 32-bit linux for nacl sdk, disable for mac tests.

native_client_sdk/src/build_tools/test_sdk.py

 #!/usr/bin/env python
 # 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.
 
 """Script for a testing an existing SDK.
 
 This script is normally run immediately after build_sdk.py.
 """
 
@@ skipping 87 matching lines @@
 
     build_projects.BuildProjectsBranch(pepperdir, test, clean=False,
                                        deps=False, config=config,
                                        args=args + ['run'])
 
   if getos.GetPlatform() == 'win':
     # On win32 we only support running on the system
     # arch
     archs = (getos.GetSystemArch('win'),)
   elif getos.GetPlatform() == 'mac':
-    # We only ship 32-bit version of sel_ldr on mac.
-    archs = ('x86_32',)
+    # We only ship 64-bit version of sel_ldr on mac.
+    archs = ('x86_64',)
   else:
     # On linux we can run both 32 and 64-bit, and arm (via qemu)
     archs = ('x86_64', 'x86_32', 'arm')
 
   for root, projects in tree.iteritems():
     for project in projects:
       if sanitizer:
         sanitizer_name = '[sanitizer=%s]'  % sanitizer
       else:
         sanitizer_name = ''
@@ skipping 124 matching lines @@
     phase_func(*phase_args)
 
   return 0
 
 
 if __name__ == '__main__':
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     buildbot_common.ErrorExit('test_sdk: interrupted')