Remove unnecessary jsoncpp includes.

webrtc/base/base.gyp

 # Copyright (c) 2014 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.
 
 {
   'includes': [ '../build/common.gypi', ],
@@ skipping 363 matching lines @@
         '-Wextra',
         '-Wall',
       ],
       'direct_dependent_settings': {
         'defines': [
           'FEATURE_ENABLE_SSL',
           'SSL_USE_OPENSSL',
           'HAVE_OPENSSL_SSL_H',
         ],
       },
-      'include_dirs': [
-        '../../third_party/jsoncpp/overrides/include',
-        '../../third_party/jsoncpp/source/include',
-      ],
       'conditions': [
         ['build_with_chromium==1', {
           'include_dirs': [
             '../../webrtc_overrides',
             '../../boringssl/src/include',
           ],
           'conditions': [
             ['OS=="win"', {
               'sources': [
                 '../../webrtc_overrides/webrtc/base/win32socketinit.cc',
@@ skipping 271 matching lines @@
     },
     {
      'target_name': 'gtest_prod',
       'type': 'static_library',
       'sources': [
         'gtest_prod_util.h',
       ],
     },
   ],
 }