Restart running apps when chrome restarts.

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 1e2a82484ceba19288be28bd5470e1970ccd2cb6..ebe4dedd23f25c4d3fcaf33948847b002736891a 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -52,6 +52,7 @@
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/renderer_host/web_cache_manager.h"
 #include "chrome/browser/search_engines/template_url_prepopulate_data.h"
+#include "chrome/browser/sessions/app_restore_service.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/task_manager/task_manager.h"
 #include "chrome/browser/translate/translate_prefs.h"
@@ -194,6 +195,7 @@ void RegisterLocalState(PrefService* local_state) {
 void RegisterUserPrefs(PrefService* user_prefs) {
   // User prefs
   AlternateErrorPageTabObserver::RegisterUserPrefs(user_prefs);
+  AppRestoreService::RegisterUserPrefs(user_prefs);
   AutofillManager::RegisterUserPrefs(user_prefs);
   bookmark_utils::RegisterUserPrefs(user_prefs);
   ChromeContentBrowserClient::RegisterUserPrefs(user_prefs);