Add the LoggedIn Predictor, to detect which websites a user is likely

chrome/browser/predictors/logged_in_predictor_table.h

+// Copyright (c) 2013 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_PREDICTORS_LOGGED_IN_PREDICTOR_TABLE_H_
+#define CHROME_BROWSER_PREDICTORS_LOGGED_IN_PREDICTOR_TABLE_H_
+
+#include <string>
+
+#include "base/time.h"
+#include "chrome/browser/predictors/predictor_table_base.h"
+#include "googleurl/src/gurl.h"
+
+namespace sql {
+class Statement;
+}
+
+namespace predictors {
+
+// Interface for database table to keep track of what sites a user is logged
+// in to.
+// All methods except the constructor and destructor need to be called on the DB
+// thread.
+// Manages one table { domain (primary key), added_timestamp }.
+class LoggedInPredictorTable : public PredictorTableBase {
+ public:
+  // Adds the relevant part of the domain of the URL provided to the database
+  // as the user having performed a login action.
+  void Add(const GURL& url);
+  // Checks whether for the relevant part of the domain of the URL provided,
+  // the user has performed a login action in the past.
+  void HasUserLoggedIn(const GURL& url, bool* is_present,
+                       bool* lookup_succeeded);
+  void DeleteAllCreatedBetween(const base::Time& delete_begin,
+                               const base::Time& delete_end);
+
+ private:
+  friend class PredictorDatabaseInternal;
+
+  LoggedInPredictorTable();
+  virtual ~LoggedInPredictorTable();
+
+  // PredictorTableBase methods.
+  virtual void CreateTableIfNonExistent() OVERRIDE;
+  virtual void LogDatabaseStats() OVERRIDE;
+
+  std::string GetKey(const GURL& url) const;
+
+  DISALLOW_COPY_AND_ASSIGN(LoggedInPredictorTable);
+};
+
+}  // namespace predictors
+
+#endif  // CHROME_BROWSER_PREDICTORS_LOGGED_IN_PREDICTOR_TABLE_H_