Always persist histograms from setup.exe.

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 28 matching lines @@
       "archive_patch_helper.cc",
       "archive_patch_helper.h",
       "install.cc",
       "install.h",
       "install_worker.cc",
       "install_worker.h",
       "installer_crash_reporter_client.cc",
       "installer_crash_reporter_client.h",
       "installer_crash_reporting.cc",
       "installer_crash_reporting.h",
-      "installer_metrics.cc",
-      "installer_metrics.h",
+      "persistent_histogram_storage.cc",
+      "persistent_histogram_storage.h",
       "setup_constants.cc",
       "setup_constants.h",
       "setup_singleton.cc",
       "setup_singleton.h",
       "setup_util.cc",
       "setup_util.h",
       "update_active_setup_version_work_item.cc",
       "update_active_setup_version_work_item.h",
       "user_hive_visitor.cc",
       "user_hive_visitor.h",
@@ skipping 47 matching lines @@
       "//testing/gmock",
       "//testing/gtest",
     ]
 
     data = [
       "//chrome/installer/test/data/",
       "//chrome/test/data/installer/",
     ]
   }
 }