ServiceWorker: ReadRegistration should return NOT_FOUND when the database is not initialized

content/browser/service_worker/service_worker_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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DATABASE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DATABASE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 161 matching lines @@
                        const std::string& user_data_name,
                        const std::string& user_data);
 
   // Deletes user data for |registration_id| and |user_data_name| from the
   // database. Returns OK if it's successfully deleted or not found in the
   // database.
   Status DeleteUserData(int64 registration_id,
                         const std::string& user_data_name);
 
   // Reads user data for all registrations that have data with |user_data_name|
-  // from the database.
+  // from the database. Returns OK if they are successfully read or not found.
   Status ReadUserDataForAllRegistrations(
       const std::string& user_data_name,
       std::vector<std::pair<int64, std::string>>* user_data);
 
   // As new resources are put into the diskcache, they go into an uncommitted
   // list. When a registration is saved that refers to those ids, they're
   // removed from that list. When a resource no longer has any registrations or
   // caches referring to it, it's added to the purgeable list. Periodically,
   // the purgeable list can be purged from the diskcache. At system startup, all
   // uncommitted ids are moved to the purgeable list.
@@ skipping 162 matching lines @@
     DISABLED,
   };
   State state_;
 
   base::SequenceChecker sequence_checker_;
 
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerDatabaseTest, OpenDatabase);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerDatabaseTest, OpenDatabase_InMemory);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerDatabaseTest, DatabaseVersion);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerDatabaseTest, GetNextAvailableIds);
+  FRIEND_TEST_ALL_PREFIXES(ServiceWorkerDatabaseTest,
+                           Registration_UninitializedDatabase);
+  FRIEND_TEST_ALL_PREFIXES(ServiceWorkerDatabaseTest,
+                           UserData_UninitializedDatabase);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerDatabaseTest, DestroyDatabase);
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerDatabase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DATABASE_H_