Profile shouldn't own Session/TabRestore services.

chrome/browser/sessions/session_service_factory.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/sessions/session_service_factory.h"
+
+#include "chrome/browser/profiles/profile_dependency_manager.h"
+#include "chrome/browser/sessions/session_service.h"
+
+// static
+SessionService* SessionServiceFactory::GetForProfile(Profile* profile) {
+  return static_cast<SessionService*>(
+      GetInstance()->GetServiceForProfile(profile, true));
+}
+
+// static
+SessionService* SessionServiceFactory::GetForProfileIfExisting(
+    Profile* profile) {
+  return static_cast<SessionService*>(
+      GetInstance()->GetServiceForProfile(profile, false));
+}
+
+// static
+void SessionServiceFactory::ShutdownForProfile(Profile* profile) {
+  // We're about to exit, force creation of the session service if it hasn't
+  // been created yet. We do this to ensure session state matches the point in
+  // time the user exited.
+  SessionServiceFactory* factory = GetInstance();
+  factory->GetServiceForProfile(profile, true);
+
+  // Shut down and remove the reference to the session service, and replace it
+  // with an explicit NULL to prevent it being recreated on the next access.
+  factory->ProfileShutdown(profile);
+  factory->ProfileDestroyed(profile);
+  factory->Associate(profile, NULL);
+}
+
+SessionServiceFactory* SessionServiceFactory::GetInstance() {
+  return Singleton<SessionServiceFactory>::get();
+}
+
+SessionServiceFactory::SessionServiceFactory()
+    : ProfileKeyedServiceFactory(
+        ProfileDependencyManager::GetInstance()) {
+}
+
+SessionServiceFactory::~SessionServiceFactory() {
+}
+
+ProfileKeyedService* SessionServiceFactory::BuildServiceInstanceFor(
+    Profile* profile) const {
+  SessionService* service = NULL;
+  service = new SessionService(profile);
+  service->ResetFromCurrentBrowsers();
+

[sky, 2011/04/27 15:58:28]

nit: nuke this line.

+  return service;
+}