Fix cyclic dependency between ProfilePolicyConnector and PrefService.

chrome/browser/chromeos/policy/policy_cert_service_factory.h

+// Copyright 2013 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_POLICY_POLICY_CERT_SERVICE_FACTORY_H_
+#define CHROME_BROWSER_CHROMEOS_POLICY_POLICY_CERT_SERVICE_FACTORY_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "components/browser_context_keyed_service/browser_context_keyed_service_factory.h"
+
+template <typename T> struct DefaultSingletonTraits;
+
+class Profile;
+
+namespace policy {
+
+class PolicyCertService;
+class PolicyCertVerifier;
+
+// Factory to create PolicyCertServices.
+class PolicyCertServiceFactory : public BrowserContextKeyedServiceFactory {
+ public:
+  // Returns an existing PolicyCertService for |profile|. See
+  // CreateForProfile.
+  static PolicyCertService* GetForProfile(Profile* profile);
+
+  // Creates a new PolicyCertService and returns the associated
+  // PolicyCertVerifier. Returns NULL if this service isn't allowed for
+  // |profile|, i.e. if NetworkConfigurationUpdater doesn't exist.
+  // This service is created separately for the original profile and the
+  // incognito profile.
+  // Note: NetworkConfigurationUpdater is currently only created for the primary
+  // user's profile.
+  static scoped_ptr<PolicyCertVerifier> CreateForProfile(Profile* profile);
+
+  static PolicyCertServiceFactory* GetInstance();
+
+ private:
+  friend struct DefaultSingletonTraits<PolicyCertServiceFactory>;
+
+  PolicyCertServiceFactory();
+  virtual ~PolicyCertServiceFactory();
+
+  // BrowserContextKeyedServiceFactory:
+  virtual BrowserContextKeyedService* BuildServiceInstanceFor(
+      content::BrowserContext* context) const OVERRIDE;
+  virtual content::BrowserContext* GetBrowserContextToUse(
+      content::BrowserContext* context) const OVERRIDE;
+  virtual void RegisterProfilePrefs(
+      user_prefs::PrefRegistrySyncable* registry) OVERRIDE;
+  virtual bool ServiceIsNULLWhileTesting() const OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(PolicyCertServiceFactory);
+};
+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_CHROMEOS_POLICY_POLICY_CERT_SERVICE_FACTORY_H_