Ignores warning for SecRandomCopyBytes() using Xcode 8

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.
 {
   'conditions': [
     ['OS=="linux" or OS=="win"', {
@@ skipping 353 matching lines @@
           ],
           'conditions': [
             ['OS=="mac"', {
               'xcode_settings': {
                 # SocketRocket autosynthesizes some properties. Disable the
                 # warning so we can compile successfully.
                 'CLANG_WARN_OBJC_MISSING_PROPERTY_SYNTHESIS': 'NO',
                 'MACOSX_DEPLOYMENT_TARGET' : '10.8',
                 # SRWebSocket.m uses code with partial availability.
                 # https://code.google.com/p/webrtc/issues/detail?id=4695
-                'WARNING_CFLAGS!': ['-Wpartial-availability'],
+                'WARNING_CFLAGS!': [
+                  '-Wpartial-availability',
+                  # Hide the warning for SecRandomCopyBytes(), till we update
+                  # to upstream.
+                  # https://bugs.chromium.org/p/webrtc/issues/detail?id=6396
+                  '-Wno-unused-result'],
               },
             }],
           ],
           'direct_dependent_settings': {
             'include_dirs': [
               'examples/objc/AppRTCDemo/third_party/SocketRocket',
             ],
           },
           'xcode_settings': {
             'CLANG_ENABLE_OBJC_ARC': 'YES',
@@ skipping 71 matching lines @@
           },
           'includes': [
             '../build/java_apk.gypi',
             '../build/android/test_runner.gypi',
           ],
         },
       ],  # targets
     }],  # OS=="android"
   ],
 }