[Mac/GN] Set up the component build.

ui/shell_dialogs/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/ui.gni")
 import("//testing/test.gni")
 if (is_android) {
   import("//build/config/android/config.gni")
 }
 
@@ skipping 45 matching lines @@
       "select_file_dialog_android.h",
     ]
     deps += [
       "//ui/android",
       "//ui/android:ui_java",
       "//ui/base:ui_base_jni_headers",
     ]
     include_dirs = [ "$root_gen_dir/ui" ]
     libs = [ "jnigraphics" ]
   }
+
+  if (is_mac) {
+    libs = [
+      "CoreServices.framework",
+      "Foundation.framework",
+      "AppKit.framework",
+    ]
+  }
 }
 
 test("shell_dialogs_unittests") {
   sources = [
     # TODO(karandeepb) : Revisit this once gn gets mac bundle support.
     # "select_file_dialog_mac_unittest.mm",
     "run_all_unittests.cc",
     "select_file_dialog_win_unittest.cc",
   ]
 
   deps = [
     ":shell_dialogs",
     "//base",
     "//base/test:test_support",
     "//testing/gtest",
     "//ui/base:base",
   ]
 }