Add BackgroundModeOptimizer that can restart the browser

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 <algorithm>
 #include <iterator>
 #include <vector>
 
 #include "build/build_config.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/lifetime/application_lifetime.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.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 "content/public/browser/web_contents.h"
 
@@ skipping 28 matching lines @@
     return;
   }
   TryToCloseBrowsers();
 }
 
 void BrowserCloseManager::CancelBrowserClose() {
   browser_shutdown::SetTryingToQuit(false);
   for (auto* browser : *BrowserList::GetInstance()) {
     browser->ResetBeforeUnloadHandlers();
   }
+  chrome::ResetRestartPrefs();
+  BackgroundModeManager::SetShouldRestartInBackground(false);
 }
 
 void BrowserCloseManager::TryToCloseBrowsers() {
   // If all browser windows can immediately be closed, fall out of this loop and
   // close the browsers. If any browser window cannot be closed, temporarily
   // stop closing. CallBeforeUnloadHandlers prompts the user and calls
   // OnBrowserReportCloseable with the result. If the user confirms the close,
   // this will trigger TryToCloseBrowsers to try again.
   for (auto* browser : *BrowserList::GetInstance()) {
     if (browser->CallBeforeUnloadHandlers(
@@ skipping 103 matching lines @@
       browser->window()->DestroyBrowser();
       // Destroying the browser should have removed it from the browser list.
       DCHECK(BrowserList::GetInstance()->end() ==
              std::find(BrowserList::GetInstance()->begin(),
                        BrowserList::GetInstance()->end(), browser));
     }
   }
 
   g_browser_process->notification_ui_manager()->CancelAll();
 }