Delete old policy code after AsyncPolicyLoader refactor.

chrome/browser/policy/asynchronous_policy_loader.h

-// Copyright (c) 2012 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_POLICY_ASYNCHRONOUS_POLICY_LOADER_H_
-#define CHROME_BROWSER_POLICY_ASYNCHRONOUS_POLICY_LOADER_H_
-#pragma once
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/time.h"
-#include "chrome/browser/policy/asynchronous_policy_provider.h"
-
-class MessageLoop;
-
-namespace policy {
-
-class PolicyBundle;
-
-// Used by the implementation of asynchronous policy provider to manage the
-// tasks on the FILE thread that do the heavy lifting of loading policies.
-class AsynchronousPolicyLoader
-    : public base::RefCountedThreadSafe<AsynchronousPolicyLoader> {
- public:
-  // The type of the callback passed to Init().
-  typedef base::Callback<void(scoped_ptr<PolicyBundle>)> UpdateCallback;
-
-  AsynchronousPolicyLoader(AsynchronousPolicyProvider::Delegate* delegate,
-                           int reload_interval_minutes);
-
-  // Triggers initial policy load, and installs |callback| as the callback to
-  // invoke on policy updates. |callback| takes ownership of the passed
-  // PolicyBundle, which contains all the policies that were loaded.
-  virtual void Init(const UpdateCallback& callback);
-
-  // Reloads policy, sending notification of changes if necessary. Must be
-  // called on the FILE thread. When |force| is true, the loader should do an
-  // immediate full reload.
-  virtual void Reload(bool force);
-
-  // Stops any pending reload tasks. Updates callbacks won't be performed
-  // anymore once the loader is stopped.
-  virtual void Stop();
-
- protected:
-  // AsynchronousPolicyLoader objects should only be deleted by
-  // RefCountedThreadSafe.
-  friend class base::RefCountedThreadSafe<AsynchronousPolicyLoader>;
-  virtual ~AsynchronousPolicyLoader();
-
-  // Schedules a call to UpdatePolicy on |origin_loop_|.
-  void PostUpdatePolicyTask(scoped_ptr<PolicyBundle> bundle);
-
-  AsynchronousPolicyProvider::Delegate* delegate() {
-    return delegate_.get();
-  }
-
-  // Performs start operations that must be performed on the FILE thread.
-  virtual void InitOnFileThread();
-
-  // Performs stop operations that must be performed on the FILE thread.
-  virtual void StopOnFileThread();
-
-  // Schedules a reload task to run when |delay| expires. Must be called on the
-  // FILE thread.
-  void ScheduleReloadTask(const base::TimeDelta& delay);
-
-  // Schedules a reload task to run after the number of minutes specified
-  // in |reload_interval_minutes_|. Must be called on the FILE thread.
-  void ScheduleFallbackReloadTask();
-
-  void CancelReloadTask();
-
-  // Invoked from the reload task on the FILE thread.
-  void ReloadFromTask();
-
- private:
-  friend class AsynchronousPolicyLoaderTest;
-
-  // Finishes loader initialization after the threading system has been fully
-  // intialized.
-  void InitAfterFileThreadAvailable();
-
-  // Invokes the |update_callback_| with a new PolicyBundle that maps
-  // the chrome namespace to |policy|. Must be called on |origin_loop_| so that
-  // it's safe to invoke |update_callback_|.
-  void UpdatePolicy(scoped_ptr<PolicyBundle> policy);
-
-  // Provides the low-level mechanics for loading policy.
-  scoped_ptr<AsynchronousPolicyProvider::Delegate> delegate_;
-
-  // Used to create and invalidate WeakPtrs on the FILE thread. These are only
-  // used to post reload tasks that can be cancelled.
-  base::WeakPtrFactory<AsynchronousPolicyLoader> weak_ptr_factory_;
-
-  // The interval at which a policy reload will be triggered as a fallback.
-  const base::TimeDelta  reload_interval_;
-
-  // The message loop on which this object was constructed. Recorded so that
-  // it's possible to call back into the non thread safe provider to fire the
-  // notification.
-  MessageLoop* origin_loop_;
-
-  // True if Stop has been called.
-  bool stopped_;
-
-  // Callback to invoke on policy updates.
-  UpdateCallback update_callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(AsynchronousPolicyLoader);
-};
-
-}  // namespace policy
-
-#endif  // CHROME_BROWSER_POLICY_ASYNCHRONOUS_POLICY_LOADER_H_