Remove the rtc_relative_path GYP variable and similar defines

webrtc/base/base_tests.gyp

 # Copyright (c) 2013 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', ],
   'targets': [
     {
       'target_name': 'rtc_base_tests_utils',
       'type': 'static_library',
       'sources': [
         'unittest_main.cc',
         # Also use this as a convenient dumping ground for misc files that are
         # included by multiple targets below.
         'fakenetwork.h',
         'fakesslidentity.h',
         'faketaskrunner.h',
         'gunit.h',
         'testbase64.h',
         'testechoserver.h',
         'testutils.h',
       ],
-      'defines': [
-        'GTEST_RELATIVE_PATH',
-      ],
       'dependencies': [
         'base.gyp:rtc_base',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         '<(webrtc_root)/test/test.gyp:field_trial',
       ],
-      'direct_dependent_settings': {
-        'defines': [
-          'GTEST_RELATIVE_PATH',
-        ],
-      },
       'export_dependent_settings': [
         '<(DEPTH)/testing/gtest.gyp:gtest',
       ],
     },
     {
       'target_name': 'rtc_base_tests',
       'type': 'none',
       'direct_dependent_settings': {
         'sources': [
           'array_view_unittest.cc',
@@ skipping 119 matching lines @@
           ['OS=="ios" or (OS=="mac" and target_arch!="ia32")', {
             'defines': [
               'CARBON_DEPRECATED=YES',
             ],
           }],
         ],  # conditions
       },
     },
   ],
 }