Add Windows and Mac network list implementation

chrome/browser/media/router/discovery/BUILD.gn

 # Copyright 2017 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 
 static_library("discovery") {
   inputs = [
     "$root_gen_dir/chrome/grit/generated_resources.h",
   ]
   deps = [
@@ skipping 24 matching lines @@
   ]
 
   if (!is_android) {
     sources += [
       "discovery_network_info.cc",
       "discovery_network_info.h",
       "discovery_network_list.h",
       "discovery_network_list_posix.cc",
       "discovery_network_list_wifi.h",
       "discovery_network_list_wifi_linux.cc",
+      "discovery_network_list_wifi_mac.mm",
       "discovery_network_list_win.cc",
       "discovery_network_monitor.cc",
       "discovery_network_monitor.h",
     ]
   }
+
+  if (is_win) {
+    libs = [ "wlanapi.lib" ]
+    ldflags = [ "/DELAYLOAD:wlanapi.dll" ]
+  }
+
+  if (is_mac) {
+    libs = [ "CoreWLAN.framework" ]
+  }
 }