Run gn format on all BUILD.gn files (gn version 306668)

mojo/shell/domain_socket/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.
 
 source_set("domain_socket") {
   sources = [
     "completion_callback.h",
     "net_errors.cc",
     "net_errors.h",
     "net_error_list.h",
     "socket_descriptor.h",
     "socket_libevent.cc",
     "socket_libevent.h",
     "unix_domain_client_socket_posix.cc",
     "unix_domain_client_socket_posix.h",
     "unix_domain_server_socket_posix.cc",
     "unix_domain_server_socket_posix.h",
   ]
 
-  deps = [ "//base" ]
+  deps = [
+    "//base",
+  ]
 }
 
 source_set("tests") {
   testonly = true
 
   sources = [
     "test_completion_callback.cc",
     "test_completion_callback.h",
     "unix_domain_client_socket_posix_unittest.cc",
     "unix_domain_server_socket_posix_unittest.cc",
   ]
 
   deps = [
     ":domain_socket",
     "//base",
     "//base/test:test_support",
     "//testing/gtest",
   ]
 }