Fix Mac ObjC PeerConnection API compilation.

webrtc/webrtc_examples.gyp

 # 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.
 {
   'includes': [
     '../talk/build/common.gypi',
@@ skipping 114 matching lines @@
                   '-lXext',
                   '-lXrender',
                 ],
               },
             }],  # OS=="linux"
           ],  # conditions
         },  # target peerconnection_client
       ], # targets
     }],  # OS=="linux" or OS=="win"
 
-    ['OS=="ios" or (OS=="mac" and target_arch!="ia32" and mac_sdk>="10.8")', {
+    ['OS=="ios" or (OS=="mac" and target_arch!="ia32")', {
       'targets': [
         {
           'target_name': 'apprtc_common',
           'type': 'static_library',
           'dependencies': [
             '<(webrtc_root)/system_wrappers/system_wrappers.gyp:field_trial_default',
             '../talk/libjingle.gyp:libjingle_peerconnection_objc',
           ],
           'sources': [
             'examples/objc/AppRTCDemo/common/ARDUtilities.h',
@@ skipping 179 matching lines @@
           ],
           'direct_dependent_settings': {
             'include_dirs': [
               'examples/objc/AppRTCDemo/third_party/SocketRocket',
             ],
           },
           'xcode_settings': {
             'CLANG_ENABLE_OBJC_ARC': 'YES',
             'WARNING_CFLAGS': [
               '-Wno-deprecated-declarations',
+              '-Wno-nonnull',
             ],
           },
           'link_settings': {
             'xcode_settings': {
               'OTHER_LDFLAGS': [
                 '-framework CFNetwork',
                 '-licucore',
               ],
             },
           }
         },  # target socketrocket
       ],  # targets
-    }],  # OS=="ios" or (OS=="mac" and target_arch!="ia32" and mac_sdk>="10.8")
+    }],  # OS=="ios" or (OS=="mac" and target_arch!="ia32")
 
     ['OS=="android"', {
       'targets': [
         {
           'target_name': 'AppRTCDemo',
           'type': 'none',
           'dependencies': [
             '../talk/libjingle.gyp:libjingle_peerconnection_java',
           ],
           'variables': {
@@ skipping 40 matching lines @@
             'apk_name': 'AppRTCDemoTest',
             'java_in_dir': 'examples/androidtests',
             'is_test_apk': 1,
           },
           'includes': [ '../build/java_apk.gypi' ],
         },
       ],  # targets
     }],  # OS=="android"
   ],
 }