Use a service to create device management backends.

chrome/browser/policy/profile_policy_context.cc

+// Copyright (c) 2010 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 "base/command_line.h"
+#include "chrome/browser/policy/configuration_policy_pref_store.h"
+#include "chrome/browser/policy/device_management_policy_provider.h"
+#include "chrome/browser/policy/device_management_service.h"
+#include "chrome/browser/policy/profile_policy_context.h"
+#include "chrome/browser/profile.h"
+#include "chrome/common/chrome_switches.h"
+
+namespace policy {
+
+ProfilePolicyContext::ProfilePolicyContext(Profile* profile)
+    : profile_(profile) {
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kDeviceManagementUrl)) {
+    device_management_service_.reset(new DeviceManagementService(
+        command_line->GetSwitchValueASCII(switches::kDeviceManagementUrl)));
+    device_management_policy_provider_.reset(
+        new policy::DeviceManagementPolicyProvider(
+            ConfigurationPolicyPrefStore::GetChromePolicyDefinitionList(),
+            device_management_service_->CreateBackend(),
+            profile_->GetTokenService(),
+            profile_->GetPath()));
+  }
+}
+
+ProfilePolicyContext::~ProfilePolicyContext() {
+  device_management_policy_provider_.reset();
+  device_management_service_.reset();
+}
+
+void ProfilePolicyContext::Initialize() {
+  if (device_management_service_.get())
+    device_management_service_->Initialize(profile_->GetRequestContext());

[Nico, 2010/11/22 12:40:16]

can you DCHECK that the prefs aren't initialized already?

[Mattias Nissler (ping if slow), 2010/11/22 14:08:07]

They are already initialized at this point, and that's intentional. The point of
this approach is to decouple the network I/O bits from the pref service
initialization (because prefs is initialized at a point where we don't have a
request context).

+}
+
+void ProfilePolicyContext::Shutdown() {
+  if (device_management_service_.get())
+    device_management_service_->Shutdown();
+  if (device_management_policy_provider_.get())
+    device_management_policy_provider_->Shutdown();
+}
+
+DeviceManagementPolicyProvider*
+ProfilePolicyContext::GetDeviceManagementPolicyProvider() {
+  return device_management_policy_provider_.get();
+}
+
+}  // namespace policy