base.gyp: Add conditions for NaCl builds.

webrtc/build/common.gypi

 # Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 # This file contains common settings for building WebRTC components.
 
@@ skipping 75 matching lines @@
     'ssl_root%': '.',
 
     # The Chromium common.gypi we use treats all gyp files without
     # chromium_code==1 as third party code. This disables many of the
     # preferred warning settings.
     #
     # We can set this here to have WebRTC code treated as Chromium code. Our
     # third party code will still have the reduced warning settings.
     'chromium_code': 1,
 
+    # Targets are by default not NaCl untrusted code.

[perkj_webrtc, 2016/05/16 12:37:20]

Can you add a little bit more descriptive text what nacl_untrusted_build is?

[kjellander_webrtc, 2016/05/20 07:16:33]

Done.

+    'nacl_untrusted_build%': 0,
+
     # Set to 1 to enable code coverage on Linux using the gcov library.
     'coverage%': 0,
 
     # Remote bitrate estimator logging/plotting.
     'enable_bwe_test_logging%': 0,
 
     # Selects fixed-point code where possible.
     'prefer_fixed_point%': 0,
 
     # Enable data logging. Produces text files with data logged within engines
@@ skipping 421 matching lines @@
           # For access to standard POSIXish features, use WEBRTC_POSIX instead
           # of a more specific macro.
           'defines': [
             'WEBRTC_POSIX',
           ],
         }],
       ],
     },
   }, # target_defaults
 }