Use Mojo pipes to signal sync IPC events

chrome/installer/setup/BUILD.gn

 # Copyright 2015 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("//chrome/version.gni")
 import("//testing/test.gni")
 
 if (is_win) {
   executable("setup") {
     sources = [
@@ skipping 10 matching lines @@
     configs -= [ "//build/config/win:console" ]
     configs += [ "//build/config/win:windowed" ]
 
     deps = [
       ":lib",
       ":setup_exe_version",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
       "//chrome/install_static:install_static_util",
       "//components/crash/content/app:app",
+      "//mojo/edk/system",
     ]
   }
 
   source_set("lib") {
     sources = [
       "app_launcher_installer.cc",
       "app_launcher_installer.h",
       "archive_patch_helper.cc",
       "archive_patch_helper.h",
       "install.cc",
@@ skipping 62 matching lines @@
       "//testing/gmock",
       "//testing/gtest",
     ]
 
     data = [
       "//chrome/installer/test/data/",
       "//chrome/test/data/installer/",
     ]
   }
 }