Profile shouldn't own background page stuff.

chrome/browser/background_contents_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/background_contents_service_factory.h"
+
+#include "base/command_line.h"
+#include "chrome/browser/background_contents_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_dependency_manager.h"
+
+// static
+BackgroundContentsService* BackgroundContentsServiceFactory::GetForProfile(
+    Profile* profile) {
+  return static_cast<BackgroundContentsService*>(
+      GetInstance()->GetServiceForProfile(profile));
+}
+
+// static
+BackgroundContentsServiceFactory* BackgroundContentsServiceFactory::
+    GetInstance() {
+  return Singleton<BackgroundContentsServiceFactory>::get();
+}
+
+BackgroundContentsServiceFactory::BackgroundContentsServiceFactory()
+    : ProfileKeyedServiceFactory(ProfileDependencyManager::GetInstance()) {
+}
+
+BackgroundContentsServiceFactory::~BackgroundContentsServiceFactory() {
+}
+
+ProfileKeyedService* BackgroundContentsServiceFactory::BuildServiceInstanceFor(
+    Profile* profile) const {
+  return new BackgroundContentsService(profile,
+                                       CommandLine::ForCurrentProcess());
+}
+
+bool BackgroundContentsServiceFactory::ServiceHasOwnInstanceInIncognito() {
+  return true;
+}