[ServiceWorkerCache] Serialize ServiceWorkerCacheStorage operations

content/browser/service_worker/service_worker_cache.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_CACHE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CACHE_H_
 
 #include <list>
 
 #include "base/callback.h"
@@ skipping 12 matching lines @@
 namespace storage {
 class BlobDataBuilder;
 class BlobDataHandle;
 class BlobStorageContext;
 class QuotaManagerProxy;
 }
 
 namespace content {
 class ChromeBlobStorageContext;
 class ServiceWorkerCacheMetadata;
+class ServiceWorkerCacheScheduler;
 class TestServiceWorkerCache;
 
 // Represents a ServiceWorker Cache as seen in
 // https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html.
 // The asynchronous methods are executed serially. Callbacks to the
 // public functions will be called so long as the cache object lives.
 class CONTENT_EXPORT ServiceWorkerCache
     : public base::RefCounted<ServiceWorkerCache> {
  public:
   enum ErrorType {
@@ skipping 132 matching lines @@
   // Loads the backend and calls the callback with the result (true for
   // success). The callback will always be called. Virtual for tests.
   virtual void CreateBackend(const ErrorCallback& callback);
   void CreateBackendDidCreate(const ServiceWorkerCache::ErrorCallback& callback,
                               scoped_ptr<ScopedBackendPtr> backend_ptr,
                               int rv);
 
   void InitBackend();
   void InitDone(ErrorType error);
 
-  void CompleteOperationAndRunNext();
-  void RunOperationIfIdle();
   void PendingClosure(const base::Closure& callback);
   void PendingErrorCallback(const ErrorCallback& callback, ErrorType error);
   void PendingResponseCallback(
       const ResponseCallback& callback,
       ErrorType error,
       scoped_ptr<ServiceWorkerResponse> response,
       scoped_ptr<storage::BlobDataHandle> blob_data_handle);
   void PendingRequestsCallback(const RequestsCallback& callback,
                                ErrorType error,
                                scoped_ptr<Requests> requests);
 
   // Be sure to check |backend_state_| before use.
   scoped_ptr<disk_cache::Backend> backend_;
 
   GURL origin_;
   base::FilePath path_;
   net::URLRequestContext* request_context_;
   scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy_;
   base::WeakPtr<storage::BlobStorageContext> blob_storage_context_;
   BackendState backend_state_;
-  std::list<base::Closure> pending_operations_;
-  bool operation_running_;
+  scoped_ptr<ServiceWorkerCacheScheduler> scheduler_;
   bool initializing_;
 
   // Whether or not to store data in disk or memory.
   bool memory_only_;
 
   base::WeakPtrFactory<ServiceWorkerCache> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerCache);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CACHE_H_