[Payments] Set cached manifest expiration date

components/payments/android/web_app_manifest_section_table.h

 // Copyright 2017 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_PAYMENTS_ANDROID_WEB_APP_MANIFEST_SECTION_TABLE_H_
 #define COMPONENTS_PAYMENTS_ANDROID_WEB_APP_MANIFEST_SECTION_TABLE_H_
 
 #include <string>
 #include <vector>
 
 #include "components/payments/mojom/payment_manifest_parser.mojom.h"
 #include "components/webdata/common/web_database.h"
 #include "components/webdata/common/web_database_table.h"
 
 namespace payments {
 
 // This class manages web_app_manifest_section table in SQLite database. It
 // expects the following schema.
 // The interfaces should only be accessed on DB thread.
 //
 // web_app_manifest_section The table stores the contents in
 //                          WebAppManifestSection.
 //
+//  expire_date             The data expire date in seconds from 1601-01-01
+//                          00:00:00 UTC.
 //  id                      The package name of the app.
 //  min_version             Minimum version number of the app.
 //  fingerprints            The result of SHA256(signing certificate bytes) for
 //                          each certificate in the app.
 //
 class WebAppManifestSectionTable : public WebDatabaseTable {
  public:
   WebAppManifestSectionTable();
   ~WebAppManifestSectionTable() override;
 
   // Retrieves the WebAppManifestSectionTable* owned by |db|.
   static WebAppManifestSectionTable* FromWebDatabase(WebDatabase* db);
 
   // WebDatabaseTable:
   WebDatabaseTable::TypeKey GetTypeKey() const override;
   bool CreateTablesIfNecessary() override;
   bool IsSyncable() override;
   bool MigrateToVersion(int version, bool* update_compatible_version) override;
 
+  // Remove expired data.
+  void RemoveExpiredData();
+
   // Adds the web app |manifest|. Note that the previous web app manifest will
   // be deleted.
   bool AddWebAppManifest(
       const std::vector<mojom::WebAppManifestSectionPtr>& manifest);
 
   // Gets manifest of the |web_app|. Returns empty vector if no manifest exists
   // for the |web_app|.
   std::vector<mojom::WebAppManifestSectionPtr> GetWebAppManifest(
       const std::string& web_app);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebAppManifestSectionTable);
 };
 
 }  // namespace payments
 
 #endif  // COMPONENTS_PAYMENTS_ANDROID_WEB_APP_MANIFEST_SECTION_TABLE_H_