Have browser process shutdown metro viewer on Metro -> Metro restart.

chrome/browser/lifetime/browser_close_manager.cc

 // Copyright 2013 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/browser/lifetime/browser_close_manager.h"
 
-#include "base/prefs/pref_service.h"
 #include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/download/download_service.h"
 #include "chrome/browser/download/download_service_factory.h"
-#include "chrome/browser/first_run/upgrade_util.h"
-#include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_iterator.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/common/pref_names.h"
 #include "content/public/browser/web_contents.h"
 
-#if defined(OS_WIN)
-#include "base/win/windows_version.h"
-#include "chrome/browser/first_run/upgrade_util_win.h"
-#endif
-
 BrowserCloseManager::BrowserCloseManager() : current_browser_(NULL) {}
 
 BrowserCloseManager::~BrowserCloseManager() {}
 
 void BrowserCloseManager::StartClosingBrowsers() {
   // If the session is ending, skip straight to closing the browsers. There's no
   // time to wait for beforeunload dialogs.
   if (browser_shutdown::GetShutdownType() == browser_shutdown::END_SESSION) {
     // Tell everyone that we are shutting down.
     browser_shutdown::SetTryingToQuit(true);
@@ skipping 121 matching lines @@
       browser->window()->DestroyBrowser();
       it_ptr.reset(new chrome::BrowserIterator());
       if (!it_ptr->done() && browser == **it_ptr) {
         // Destroying the browser should have removed it from the browser list.
         // We should never get here.
         NOTREACHED();
         return;
       }
     }
   }
-
-#if defined(OS_WIN)
-  if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
-    PrefService* pref_service = g_browser_process->local_state();
-    bool is_relaunch = pref_service->GetBoolean(prefs::kWasRestarted);
-    if (is_relaunch) {
-      upgrade_util::RelaunchMode mode = upgrade_util::RelaunchModeStringToEnum(
-          pref_service->GetString(prefs::kRelaunchMode));
-      if (mode == upgrade_util::RELAUNCH_MODE_DESKTOP)
-        chrome::ActivateDesktopHelper(chrome::ASH_TERMINATE);
-    }
-  }
-#endif
 }