Fix partial availability warnings on Mac AppRTCMobile

webrtc/examples/BUILD.gn

 # Copyright (c) 2016 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.
 
 import("../webrtc.gni")
 if (is_android) {
@@ skipping 178 matching lines @@
   config("apprtc_signaling_config") {
     include_dirs = [ "objc/AppRTCMobile" ]
 
     # GN orders flags on a target before flags from configs. The default config
     # adds these flags so to cancel them out they need to come from a config and
     # cannot be on the target directly.
     cflags = [
       "-Wno-sign-compare",
       "-Wno-unused-variable",
     ]
-    if (is_mac) {
-      cflags += [ "-Wno-partial-availability" ]
-    }
   }
 
   rtc_static_library("apprtc_signaling") {
     sources = [
       "objc/AppRTCMobile/ARDAppClient+Internal.h",
       "objc/AppRTCMobile/ARDAppClient.h",
       "objc/AppRTCMobile/ARDAppClient.m",
       "objc/AppRTCMobile/ARDAppEngineClient.h",
       "objc/AppRTCMobile/ARDAppEngineClient.m",
       "objc/AppRTCMobile/ARDBitrateTracker.h",
@@ skipping 149 matching lines @@
       ]
       deps = [
         ":apprtc_common",
         ":apprtc_signaling",
       ]
     }
 
     mac_app_bundle("AppRTCMobile") {
       output_name = "AppRTCMobile"
 
-      extra_substitutions = [ "MACOSX_DEPLOYMENT_TARGET=10.8" ]
-
       sources = [
         "objc/AppRTCMobile/mac/main.m",
       ]
 
       public_configs = [ "..:common_inherited_config" ]
 
       info_plist = "objc/AppRTCMobile/mac/Info.plist"
 
       libs = [ "AppKit.framework" ]
 
@@ skipping 19 matching lines @@
     ]
 
     cflags_objc = [
       # Enabled for cflags_objc in build/config/compiler/BUILD.gn.
       "-Wno-objc-missing-property-synthesis",
 
       # Hide the warning for SecRandomCopyBytes(), until we update to upstream.
       # https://bugs.chromium.org/p/webrtc/issues/detail?id=6396
       "-Wno-unused-result",
     ]
-
-    if (is_mac) {
-      cflags += [ "-Wno-partial-availability" ]
-    }
   }
 
   rtc_static_library("socketrocket") {
     sources = [
       "objc/AppRTCMobile/third_party/SocketRocket/SRWebSocket.h",
       "objc/AppRTCMobile/third_party/SocketRocket/SRWebSocket.m",
     ]
     configs += [
       "//build/config/compiler:enable_arc",
       ":socketrocket_warning_config",
@@ skipping 203 matching lines @@
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     deps = [
       "../p2p:libstunprober",
       "../p2p:rtc_p2p",
       "../system_wrappers:field_trial_default",
     ]
   }
 }