Include path to chromium's trunk should be before webrtc when building libjingle (otherwise e.g. we…

third_party/libjingle/libjingle.gyp

 # 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.
 
 {
   'includes': [
     '../../build/win_precompile.gypi',
   ],
   'variables': {
     'enabled_libjingle_device_manager%': 0,
@@ skipping 23 matching lines @@
         'defines': [
           # TODO(sergeyu): Fix libjingle to use NDEBUG instead of
           # _DEBUG and remove this define. See below as well.
           '_DEBUG',
         ],
       }
     },
     'include_dirs': [
       './overrides',
       './<(libjingle_source)',
+      '../..',
       '../../testing/gtest/include',
       '../../third_party',
       '../../third_party/libyuv/include',
       '../../third_party/usrsctp',
       '../../third_party/webrtc',
     ],
     'dependencies': [
       '<(DEPTH)/base/base.gyp:base',
       '<(DEPTH)/net/net.gyp:net',
       '<(DEPTH)/third_party/expat/expat.gyp:expat',
@@ skipping 586 matching lines @@
               # in this directory and not lib.target as will otherwise be
               # the case with make builds.
               'product_dir': '<(PRODUCT_DIR)/lib',
             }],
           ],
         },  # target libpeerconnection
       ],
     }],
   ],
 }