Implement AffiliationDatabase to cache affiliation information in a SQLite DB.

components/password_manager/core/browser/affiliation_utils.h

 // Copyright 2014 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.
 
 // This file contains utilities related to working with "facets".
 //
 // A "facet" is defined as the manifestation of a logical application on a given
 // platform. For example, "My Bank" may have released an Android application
 // and a Web application accessible from a browser. These are all facets of the
 // "My Bank" logical application.
@@ skipping 30 matching lines @@
 //          openssl sha -sha512 -binary | base64 | tr '+/' '-_'
 //
 
 #ifndef COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_UTILS_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_UTILS_H_
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
+#include "base/time/time.h"
 #include "url/url_parse.h"
 
 namespace password_manager {
 
 // Encapsulates a facet URI in canonical form.
 //
 // This is a very light-weight wrapper around an std::string containing the text
 // of the URI, and can be passed around as a value. The main rationale for the
 // existance of this class is to make it clearer in the code when a certain URI
 // is known to be a valid facet URI in canonical form, and to allow verifying
@@ skipping 69 matching lines @@
   // |is_valid_| is true.
   std::string canonical_spec_;
 
   // Identified components of the canonical spec.
   url::Parsed parsed_;
 };
 
 // A collection of facets affiliated with each other, i.e. an equivalence class.
 typedef std::vector<FacetURI> AffiliatedFacets;
 
+// A collection of facets affiliated with each other, i.e. an equivalence class,
+// plus a timestamp that indicates the last time the data was updated from an
+// authoritative source.
+struct AffiliatedFacetsWithUpdateTime {
+  AffiliatedFacetsWithUpdateTime();
+  ~AffiliatedFacetsWithUpdateTime();
+
+  AffiliatedFacets facets;
+  base::Time last_update_time;
+};
+
 // Returns whether or not equivalence classes |a| and |b| are equal, that is,
 // whether or not they consist of the same set of facets.
 //
 // Note that this will do some sorting, so it can be expensive for large inputs.
 bool AreEquivalenceClassesEqual(const AffiliatedFacets& a,
                                 const AffiliatedFacets& b);
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_UTILS_H_