Reland 2: Move the files related to Android <-> Web credentials to a separate folder.

components/password_manager/core/browser/facet_manager.h

-// Copyright 2015 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 COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_FACET_MANAGER_H_
-#define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_FACET_MANAGER_H_
-
-#include <set>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/time/time.h"
-#include "components/password_manager/core/browser/affiliation_service.h"
-#include "components/password_manager/core/browser/affiliation_utils.h"
-
-namespace base {
-class Clock;
-class TaskRunner;
-}  // namespace base
-
-namespace password_manager {
-
-class FacetManagerHost;
-
-// Encapsulates the state and logic required for handling affiliation requests
-// concerning a single facet. The AffiliationBackend owns one instance for each
-// facet that requires attention, and it itself implements the FacetManagerHost
-// interface to provide shared functionality needed by all FacetManagers.
-class FacetManager {
- public:
-  using StrategyOnCacheMiss = AffiliationService::StrategyOnCacheMiss;
-
-  // Both the |backend| and |clock| must outlive this object.
-  FacetManager(const FacetURI& facet_uri,
-               FacetManagerHost* backend,
-               base::Clock* clock);
-  ~FacetManager();
-
-  // Facet-specific implementations for methods in AffiliationService of the
-  // same name. See documentation in affiliation_service.h for details:
-  void GetAffiliations(
-      StrategyOnCacheMiss cache_miss_strategy,
-      const AffiliationService::ResultCallback& callback,
-      const scoped_refptr<base::TaskRunner>& callback_task_runner);
-  void Prefetch(const base::Time& keep_fresh_until);
-  void CancelPrefetch(const base::Time& keep_fresh_until);
-
-  // Called when |affiliation| information regarding this facet has just been
-  // fetched from the Affiliation API.
-  void OnFetchSucceeded(const AffiliatedFacetsWithUpdateTime& affiliation);
-
-  // Called by the backend when the time specified in RequestNotificationAtTime
-  // has come to pass, so that |this| can perform delayed administrative tasks.
-  void NotifyAtRequestedTime();
-
-  // Returns whether this instance has becomes redundant, that is, it has no
-  // more meaningful state than a newly created instance would have.
-  bool CanBeDiscarded() const;
-
-  // Returns whether or not cached data for this facet can be discarded without
-  // harm when trimming the database.
-  bool CanCachedDataBeDiscarded() const;
-
-  // Returns whether or not affiliation information relating to this facet needs
-  // to be fetched right now.
-  bool DoesRequireFetch() const;
-
-  // The members below are made public for the sake of tests.
-
-  // Returns whether or not cached data for this facet is fresh (not stale).
-  bool IsCachedDataFresh() const;
-
-  // Returns whether or not cached data for this facet is near-stale or stale.
-  bool IsCachedDataNearStale() const;
-
-  // The duration after which cached affiliation data is considered near-stale.
-  static const int kCacheSoftExpiryInHours;
-
-  // The duration after which cached affiliation data is considered stale.
-  static const int kCacheHardExpiryInHours;
-
- private:
-  struct RequestInfo;
-
-  // Returns the time when the cached data for this facet will become stale.
-  // The data is considered stale with the returned time value inclusive.
-  base::Time GetCacheHardExpiryTime() const;
-
-  // Returns the time when cached data for this facet becomes near-stale.
-  // The data is considered near-stale with the returned time value inclusive.
-  base::Time GetCacheSoftExpiryTime() const;
-
-  // Returns the maximum of |keep_fresh_thresholds_|, or the NULL time if the
-  // set is empty.
-  base::Time GetMaximumKeepFreshUntilThreshold() const;
-
-  // Returns the next time affiliation data for this facet needs to be fetched
-  // due to active prefetch requests, or base::Time::Max() if not at all.
-  base::Time GetNextRequiredFetchTimeDueToPrefetch() const;
-
-  // Posts the callback of the request described by |request_info| with success.
-  static void ServeRequestWithSuccess(const RequestInfo& request_info,
-                                      const AffiliatedFacets& affiliation);
-
-  // Posts the callback of the request described by |request_info| with failure.
-  static void ServeRequestWithFailure(const RequestInfo& request_info);
-
-  FacetURI facet_uri_;
-  FacetManagerHost* backend_;
-  base::Clock* clock_;
-
-  // The last time affiliation information was fetched for this facet, i.e. the
-  // freshness of the data in the cache. If there is no corresponding data in
-  // the database, this will contain the NULL time. Otherwise, the update time
-  // in the database should match this value; it is stored to reduce disk I/O.
-  base::Time last_update_time_;
-
-  // Contains information about the GetAffiliations() requests that are waiting
-  // for the result of looking up this facet.
-  std::vector<RequestInfo> pending_requests_;
-
-  // Keeps track of |keep_fresh_until| thresholds corresponding to Prefetch()
-  // requests for this facet. Affiliation information for this facet must be
-  // kept fresh by periodic refetches until at least the maximum time in this
-  // set (exclusive).
-  //
-  // This is not a single timestamp but rather a multiset so that cancellation
-  // of individual prefetches can be supported even if there are two requests
-  // with the same |keep_fresh_until| threshold.
-  std::multiset<base::Time> keep_fresh_until_thresholds_;
-
-  DISALLOW_COPY_AND_ASSIGN(FacetManager);
-};
-
-}  // namespace password_manager
-#endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_FACET_MANAGER_H_