nacl: Be more consistent about setting nacl_untrusted_build on targets that use untrusted.gypi

third_party/libjingle/libjingle_nacl.gyp

 # 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': {
     'libjingle_source': "source",
     'webrtc_base': "../webrtc/base",
     'webrtc_xmllite': "../webrtc/libjingle/xmllite",
     'webrtc_p2p': "../webrtc/p2p",
@@ skipping 283 matching lines @@
       'export_dependent_settings': [
         '<(DEPTH)/native_client_sdk/native_client_sdk_untrusted.gyp:nacl_io_untrusted',
       ],
     },  # end of target 'libjingle_nacl'
 
     {
       'target_name': 'libjingle_p2p_constants_nacl',
       'type': 'none',
       'variables': {
         'nlib_target': 'libjingle_p2p_constants_nacl.a',
+        'nacl_untrusted_build': 1,
         'build_glibc': 0,
         'build_newlib': 1,
         'build_pnacl_newlib': 1,
       },
       'configurations': {
         'Debug': {
           'defines': [
             # TODO(sergeyu): Fix libjingle to use NDEBUG instead of
             # _DEBUG and remove this define. See below as well.
             '_DEBUG',
           ],
         }
       },
       'include_dirs': [
         './<(libjingle_source)',
         '../'
       ],
       'sources': [
         '<(webrtc_p2p)/base/constants.cc',
         '<(webrtc_p2p)/base/constants.h',
       ],
     },  # end of target 'libjingle_p2p_constants_nacl'
   ],
 }