Persist setup metrics and have Chrome report them during UMA upload.

chrome/installer/setup/setup_main.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/installer/setup/setup_main.h"
 
 #include <windows.h>
 #include <msi.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 27 matching lines @@
 #include "base/win/scoped_handle.h"
 #include "base/win/win_util.h"
 #include "base/win/windows_version.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/installer/setup/archive_patch_helper.h"
 #include "chrome/installer/setup/install.h"
 #include "chrome/installer/setup/install_worker.h"
 #include "chrome/installer/setup/installer_crash_reporting.h"
+#include "chrome/installer/setup/installer_metrics.h"
 #include "chrome/installer/setup/setup_constants.h"
 #include "chrome/installer/setup/setup_util.h"
 #include "chrome/installer/setup/uninstall.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "chrome/installer/util/delete_after_reboot_helper.h"
 #include "chrome/installer/util/delete_tree_work_item.h"
 #include "chrome/installer/util/google_update_constants.h"
 #include "chrome/installer/util/google_update_settings.h"
 #include "chrome/installer/util/google_update_util.h"
 #include "chrome/installer/util/helper.h"
 #include "chrome/installer/util/html_dialog.h"
 #include "chrome/installer/util/install_util.h"
 #include "chrome/installer/util/installation_state.h"
 #include "chrome/installer/util/installation_validator.h"
 #include "chrome/installer/util/installer_state.h"
 #include "chrome/installer/util/installer_util_strings.h"
 #include "chrome/installer/util/l10n_string_util.h"
 #include "chrome/installer/util/logging_installer.h"
 #include "chrome/installer/util/lzma_util.h"
 #include "chrome/installer/util/master_preferences.h"
 #include "chrome/installer/util/master_preferences_constants.h"
 #include "chrome/installer/util/self_cleaning_temp_dir.h"
 #include "chrome/installer/util/shell_util.h"
 #include "chrome/installer/util/user_experiment.h"
+#include "chrome/installer/util/util_constants.h"
 #include "components/crash/content/app/crash_switches.h"
 #include "components/crash/content/app/run_as_crashpad_handler_win.h"
 #include "content/public/common/content_switches.h"
 
 #if defined(GOOGLE_CHROME_BUILD)
 #include "chrome/installer/util/updating_app_registration_data.h"
 #endif
 
 using installer::InstallerState;
 using installer::InstallationState;
@@ skipping 1535 matching lines @@
 }  // namespace installer
 
 int WINAPI wWinMain(HINSTANCE instance, HINSTANCE prev_instance,
                     wchar_t* command_line, int show_command) {
   // Check to see if the CPU is supported before doing anything else. There's
   // very little than can safely be accomplished if the CPU isn't supported
   // since dependent libraries (e.g., base) may use invalid instructions.
   if (!installer::IsProcessorSupported())
     return installer::CPU_NOT_SUPPORTED;
 
+  // Persist histograms so they can be uploaded later.
+  installer::BeginPersistentHistogramStorage();
+
   // The exit manager is in charge of calling the dtors of singletons.
   base::AtExitManager exit_manager;
   base::CommandLine::Init(0, NULL);
 
   std::string process_type =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kProcessType);
 
   if (process_type == crash_reporter::switches::kCrashpadHandler) {
     return crash_reporter::RunAsCrashpadHandler(
@@ skipping 138 matching lines @@
   // MSI demands that custom actions always return 0 (ERROR_SUCCESS) or it will
   // rollback the action. If we're uninstalling we want to avoid this, so always
   // report success, squashing any more informative return codes.
   if (!(installer_state.is_msi() && is_uninstall)) {
     // Note that we allow the status installer::UNINSTALL_REQUIRES_REBOOT
     // to pass through, since this is only returned on uninstall which is
     // never invoked directly by Google Update.
     return_code = InstallUtil::GetInstallReturnCode(install_status);
   }
 
+  installer::EndPersistentHistogramStorage(installer_state.target_path());
   VLOG(1) << "Installation complete, returning: " << return_code;
 
   return return_code;
 }