Implement the statistics table for the passwords.

components/password_manager/core/browser/login_database.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.
 
 #ifndef COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_LOGIN_DATABASE_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_LOGIN_DATABASE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_vector.h"
 #include "base/pickle.h"
 #include "base/strings/string16.h"
 #include "components/password_manager/core/browser/password_store.h"
 #include "components/password_manager/core/browser/password_store_change.h"
 #include "components/password_manager/core/browser/psl_matching_helper.h"
+#include "components/password_manager/core/browser/statistics_table.h"
 #include "sql/connection.h"
 #include "sql/meta_table.h"
 
 namespace password_manager {
 
 extern const int kCurrentVersionNumber;
 
 // Interface to the database storage of login information, intended as a helper
 // for PasswordStore on platforms that need internal storage of some or all of
 // the login information.
@@ skipping 72 matching lines @@
   bool GetBlacklistLogins(ScopedVector<autofill::PasswordForm>* forms) const
       WARN_UNUSED_RESULT;
 
   // Deletes the login database file on disk, and creates a new, empty database.
   // This can be used after migrating passwords to some other store, to ensure
   // that SQLite doesn't leave fragments of passwords in the database file.
   // Returns true on success; otherwise, whether the file was deleted and
   // whether further use of this login database will succeed is unspecified.
   bool DeleteAndRecreateDatabaseFile();
 
+  StatisticsTable& stats_table() { return stats_table_; }
+
  private:
   // Result values for encryption/decryption actions.
   enum EncryptionResult {
     // Success.
     ENCRYPTION_RESULT_SUCCESS,
     // Failure for a specific item (e.g., the encrypted value was manually
     // moved from another machine, and can't be decrypted on this machine).
     // This is presumed to be a permanent failure.
     ENCRYPTION_RESULT_ITEM_FAILURE,
     // A service-level failure (e.g., on a platform using a keyring, the keyring
@@ skipping 37 matching lines @@
   // Overwrites |forms| with credentials retrieved from |statement|. If
   // |psl_match| is not null, filters out all results but thos PSL-matching
   // |*psl_match|. On success returns true.
   static bool StatementToForms(sql::Statement* statement,
                                const autofill::PasswordForm* psl_match,
                                ScopedVector<autofill::PasswordForm>* forms);
 
   base::FilePath db_path_;
   mutable sql::Connection db_;
   sql::MetaTable meta_table_;
+  StatisticsTable stats_table_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginDatabase);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_LOGIN_DATABASE_H_