[ServiceWorker] Add unittests for ServiceWorkerWriteToCacheJob.

content/browser/service_worker/service_worker_storage.h

 // Copyright 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_STORAGE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_STORAGE_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 150 matching lines @@
   bool IsDisabled() const;
 
   // |resources| must already be on the purgeable list.
   void PurgeResources(const ResourceList& resources);
 
  private:
   friend class ServiceWorkerResourceStorageTest;
   friend class ServiceWorkerControlleeRequestHandlerTest;
   friend class ServiceWorkerContextRequestHandlerTest;
   friend class ServiceWorkerRequestHandlerTest;
+  friend class ServiceWorkerWriteToCacheJobTest;
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerResourceStorageTest,
                            DeleteRegistration_NoLiveVersion);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerResourceStorageTest,
                            DeleteRegistration_WaitingVersion);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerResourceStorageTest,
                            DeleteRegistration_ActiveVersion);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerResourceStorageTest,
                            UpdateRegistration);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerResourceStorageDiskTest,
                            CleanupOnRestart);
@@ skipping 218 matching lines @@
   std::set<int64> pending_deletions_;
 
   base::WeakPtrFactory<ServiceWorkerStorage> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerStorage);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_STORAGE_H_