Use an explicit identifier in Config

talk/libjingle.gyp

 #
 # libjingle
 # Copyright 2012 Google Inc.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #
 #  1. Redistributions of source code must retain the above copyright notice,
 #     this list of conditions and the following disclaimer.
 #  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 666 matching lines @@
       'conditions': [
         ['build_libsrtp==1', {
           'dependencies': [
             '<(DEPTH)/third_party/libsrtp/libsrtp.gyp:libsrtp',
           ],
         }],
       ],
       'include_dirs': [
         '<(DEPTH)/testing/gtest/include',
       ],
+      'include_dirs!': [
+        '<(DEPTH)/webrtc',
+      ],
       'direct_dependent_settings': {
         'include_dirs': [
           '<(DEPTH)/testing/gtest/include',
         ],
+        'include_dirs!': [
+          '<(DEPTH)/webrtc',
+        ],
       },
       'sources': [
         'session/media/audiomonitor.cc',
         'session/media/audiomonitor.h',
         'session/media/bundlefilter.cc',
         'session/media/bundlefilter.h',
         'session/media/channel.cc',
         'session/media/channel.h',
         'session/media/channelmanager.cc',
         'session/media/channelmanager.h',
@@ skipping 98 matching lines @@
         ['OS=="android" and build_with_chromium==0', {
           'sources': [
             'app/webrtc/androidvideocapturer.h',
             'app/webrtc/androidvideocapturer.cc',
            ],
         }],
       ],
     },  # target libjingle_peerconnection
   ],
 }