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

ppapi/ppapi_nacl_test_common.gypi

 # Copyright (c) 2013 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',
   ],
   'target_defaults': {
     # We need to override the variables in untrusted.gypi outside of a
     # target_condition block because the target_condition block in
     # untrusted gypi is fully evaluated and interpolated before any of the
     # target_condition blocks in this file are expanded.  This means that any
     # variables overriden inside a target_condition block in this file will not
     # affect the values in untrusted.gypi.
     'variables': {
+      'nacl_untrusted_build': 1,

[Nico, 2015/09/15 01:01:20]

(seems like every target including this gypi probably wants this)

[bradnelson, 2015/09/15 01:25:16]

Not sure. There may be places where not every target in a file in a nacl one.

       'test_files': [],
       'generate_nmf%': 1,
       'nacl_newlib_out_dir': '<(PRODUCT_DIR)/>(nexe_destination_dir)/newlib',
       'nacl_glibc_out_dir': '<(PRODUCT_DIR)/>(nexe_destination_dir)/glibc',
       'nacl_pnacl_newlib_out_dir': '<(PRODUCT_DIR)/>(nexe_destination_dir)/pnacl',
       'nacl_pnacl_newlib_nonsfi_out_dir': '<(PRODUCT_DIR)/>(nexe_destination_dir)/nonsfi',
       'target_conditions': [
         ['nexe_target!=""', {
           # These variables are used for nexe building and for library building.
           'out_newlib32%': '>(nacl_newlib_out_dir)/>(nexe_target)_newlib_x86_32.nexe',
@@ skipping 231 matching lines @@
                   }],
                 ],
               },
             ],
           }],
         ],
       }],
     ],
   },
 }