Move policy code into components/policy.

chrome/browser/policy/policy_service_impl.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_POLICY_SERVICE_IMPL_H_
-#define CHROME_BROWSER_POLICY_POLICY_SERVICE_IMPL_H_
-
-#include <map>
-#include <set>
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "chrome/browser/policy/policy_service.h"
-#include "components/policy/core/common/configuration_policy_provider.h"
-#include "components/policy/core/common/policy_bundle.h"
-
-namespace policy {
-
-class PolicyMap;
-
-class PolicyServiceImpl : public PolicyService,
-                          public ConfigurationPolicyProvider::Observer {
- public:
-  typedef std::vector<ConfigurationPolicyProvider*> Providers;
-  typedef base::Callback<void(PolicyBundle*)> PreprocessCallback;
-
-  // The PolicyServiceImpl will merge policies from |providers|. |providers|
-  // must be sorted in decreasing order of priority; the first provider will
-  // have the highest priority. The PolicyServiceImpl does not take ownership of
-  // the providers, and they must outlive the PolicyServiceImpl.
-  // |preprocess_callback| will be applied every PolicyBundle before merginng.
-  PolicyServiceImpl(const Providers& providers,
-                    const PreprocessCallback& preprocess_callback);
-
-  virtual ~PolicyServiceImpl();
-
-  // PolicyService overrides:
-  virtual void AddObserver(PolicyDomain domain,
-                           PolicyService::Observer* observer) OVERRIDE;
-  virtual void RemoveObserver(PolicyDomain domain,
-                              PolicyService::Observer* observer) OVERRIDE;
-  virtual const PolicyMap& GetPolicies(
-      const PolicyNamespace& ns) const OVERRIDE;
-  virtual bool IsInitializationComplete(PolicyDomain domain) const OVERRIDE;
-  virtual void RefreshPolicies(const base::Closure& callback) OVERRIDE;
-
- private:
-  typedef ObserverList<PolicyService::Observer, true> Observers;
-  typedef std::map<PolicyDomain, Observers*> ObserverMap;
-
-  // ConfigurationPolicyProvider::Observer overrides:
-  virtual void OnUpdatePolicy(ConfigurationPolicyProvider* provider) OVERRIDE;
-
-  // Posts a task to notify observers of |ns| that its policies have changed,
-  // passing along the |previous| and the |current| policies.
-  void NotifyNamespaceUpdated(const PolicyNamespace& ns,
-                              const PolicyMap& previous,
-                              const PolicyMap& current);
-
-  // Combines the policies from all the providers, and notifies the observers
-  // of namespaces whose policies have been modified.
-  void MergeAndTriggerUpdates();
-
-  // Checks if all providers are initialized, and notifies the observers
-  // if the service just became initialized.
-  void CheckInitializationComplete();
-
-  // Invokes all the refresh callbacks if there are no more refreshes pending.
-  void CheckRefreshComplete();
-
-  // The providers passed in the constructor, in order of decreasing priority.
-  Providers providers_;
-
-  // Maps each policy namespace to its current policies.
-  PolicyBundle policy_bundle_;
-
-  // Maps each policy domain to its observer list.
-  ObserverMap observers_;
-
-  // True if all the providers are initialized for the indexed policy domain.
-  bool initialization_complete_[POLICY_DOMAIN_SIZE];
-
-  // Set of providers that have a pending update that was triggered by a
-  // call to RefreshPolicies().
-  std::set<ConfigurationPolicyProvider*> refresh_pending_;
-
-  // Callback invoked to manipulate a PolicyBundle before it is merged.
-  PreprocessCallback preprocess_callback_;
-
-  // List of callbacks to invoke once all providers refresh after a
-  // RefreshPolicies() call.
-  std::vector<base::Closure> refresh_callbacks_;
-
-  // Used to create tasks to delay new policy updates while we may be already
-  // processing previous policy updates.
-  base::WeakPtrFactory<PolicyServiceImpl> update_task_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(PolicyServiceImpl);
-};
-
-}  // namespace policy
-
-#endif  // CHROME_BROWSER_POLICY_POLICY_SERVICE_IMPL_H_