Introduce networking.cast API

chrome/test/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 2585 matching lines @@
       ]
     }
     if (is_mac || is_win || (is_linux && !is_chromeos)) {
       sources += [
         # Tests for non mobile and non CrOS (includes Linux, Win, Mac).
         "../browser/metrics/desktop_session_duration/audible_contents_tracker_browsertest.cc",
         "../browser/metrics/desktop_session_duration/chrome_visibility_observer_browsertest.cc",
         "../browser/profiles/profile_statistics_browsertest.cc",
       ]
     }
+    if (is_mac || is_win || is_chromeos) {
+      sources += [ "../browser/extensions/api/networking_cast_private/networking_cast_private_apitest.cc" ]
+    }
     if (enable_app_list) {
       sources += [
         "../browser/apps/drive/drive_app_converter_browsertest.cc",
         "../browser/apps/drive/drive_app_provider_browsertest.cc",
         "../browser/ui/app_list/app_list_controller_browsertest.cc",
         "../browser/ui/app_list/app_list_service_impl_browsertest.cc",
         "../browser/ui/app_list/search/webstore/webstore_provider_browsertest.cc",
         "../browser/ui/app_list/speech_recognizer_browsertest.cc",
       ]
     }
@@ skipping 2571 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }