Remove notification_helper's deps on chrome/installer/setup

This dependence is unnecessary so remove it.

Bug: 734095
Change-Id: Ibadaab346553f3d842ecc371328bf624583f25ec
Reviewed-on: https://chromium-review.googlesource.com/999039
Commit-Queue: Xi Cheng <chengx@chromium.org>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548646}

notification_helper/BUILD.gn

@@ -72,7 +72,6 @@ test("notification_helper_unittests") {
     "//base/test:test_support",
     "//chrome/install_static:install_static_util",
     "//chrome/install_static/test:test_support",
-    "//chrome/installer/setup:lib",
     "//chrome/installer/util:with_no_strings",
     "//testing/gtest",
   ]

notification_helper/DEPS

@@ -4,7 +4,6 @@ include_rules = [
   "+chrome/common/chrome_switches.h",
   "+chrome/common/chrome_version.h",
   "+chrome/install_static",
-  "+chrome/installer/setup",
   "+chrome/installer/util",
   "+components/crash/content/app/crashpad.h",
   "+components/crash/content/app/crash_reporter_client.h",

notification_helper/notification_helper_process_unittest.cc

@@ -14,7 +14,6 @@
 #include "base/win/scoped_winrt_initializer.h"
 #include "base/win/windows_types.h"
 #include "chrome/install_static/install_util.h"
-#include "chrome/installer/setup/setup_util.h"
 #include "chrome/installer/util/install_util.h"
 #include "chrome/installer/util/registry_key_backup.h"
 #include "chrome/installer/util/util_constants.h"