Add foundation for trimming the AffiliationDatabase.

components/password_manager/core/browser/affiliation_backend.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_AFFILIATION_BACKEND_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_BACKEND_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 61 matching lines @@
   void GetAffiliations(
       const FacetURI& facet_uri,
       StrategyOnCacheMiss cache_miss_strategy,
       const AffiliationService::ResultCallback& callback,
       const scoped_refptr<base::TaskRunner>& callback_task_runner);
   void Prefetch(const FacetURI& facet_uri, const base::Time& keep_fresh_until);
   void CancelPrefetch(const FacetURI& facet_uri,
                       const base::Time& keep_fresh_until);
   void TrimCache();
 
+  // Deletes the cache database file at |db_path|, and all auxiliary files. The
+  // database must be closed before calling this.
+  static void DeleteCache(const base::FilePath& db_path);
+
  private:
   friend class AffiliationBackendTest;
 
   // Retrieves the FacetManager corresponding to |facet_uri|, creating it and
   // storing it into |facet_managers_| if it did not exist.
   FacetManager* GetOrCreateFacetManager(const FacetURI& facet_uri);
 
   // Scheduled by RequestNotificationAtTime() to be called back at times when a
   // FacetManager needs to be notified.
   void OnSendNotification(const FacetURI& facet_uri);
@@ skipping 40 matching lines @@
   base::ScopedPtrHashMap<FacetURI, FacetManager> facet_managers_;
 
   base::WeakPtrFactory<AffiliationBackend> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AffiliationBackend);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_BACKEND_H_