Store the "browser autorestarted, last session must be restored" information in a preference.

chrome/browser/ui/browser_init.cc

 // Copyright (c) 2011 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/ui/browser_init.h"
 
 #include <algorithm>   // For max().
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 314 matching lines @@
                        const PrefService* prefs) {
   IncognitoModePrefs::Availability incognito_avail =
       IncognitoModePrefs::GetAvailability(prefs);
   return incognito_avail != IncognitoModePrefs::DISABLED &&
          (command_line.HasSwitch(switches::kIncognito) ||
           incognito_avail == IncognitoModePrefs::FORCED);
 }
 
 SessionStartupPref GetSessionStartupPref(const CommandLine& command_line,
                                          Profile* profile) {
+  PrefService* pref_service = g_browser_process->local_state();
   SessionStartupPref pref = SessionStartupPref::GetStartupPref(profile);
-  if (command_line.HasSwitch(switches::kRestoreLastSession))
+  if (command_line.HasSwitch(switches::kRestoreLastSession) ||
+      pref_service->GetBoolean(prefs::kWasRestarted)) {
     pref.type = SessionStartupPref::LAST;
+  }
   if (pref.type == SessionStartupPref::LAST &&
       IncognitoIsForced(command_line, profile->GetPrefs())) {
     // We don't store session information when incognito. If the user has
     // chosen to restore last session and launched incognito, fallback to
     // default launch behavior.
     pref.type = SessionStartupPref::DEFAULT;
   }
   return pref;
 }
 
@@ skipping 1138 matching lines @@
   if (!automation->InitializeChannel(channel_id))
     return false;
   automation->SetExpectedTabCount(expected_tabs);
 
   AutomationProviderList* list = g_browser_process->GetAutomationProviderList();
   DCHECK(list);
   list->AddProvider(automation);
 
   return true;
 }