[ServiceWorkerCache] Make ServiceWorkerCache::Put guarantee callback like the header says

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 "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
@@ skipping 11 matching lines @@
 class BlobData;
 class BlobDataHandle;
 class BlobStorageContext;
 class QuotaManagerProxy;
 }
 
 namespace content {
 class ChromeBlobStorageContext;
 class ServiceWorkerCacheMetadata;
 
-// TODO(jkarlin): Unload cache backend from memory once the cache object is no
-// longer referenced in javascript.
-
 // Represents a ServiceWorker Cache as seen in
 // https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html.
 // InitializeIfNeeded must be called before calling the other public members.
 class CONTENT_EXPORT ServiceWorkerCache
     : public base::RefCounted<ServiceWorkerCache> {
  public:
   enum ErrorType {
     ErrorTypeOK = 0,
     ErrorTypeExists,
     ErrorTypeStorage,
@@ skipping 51 matching lines @@
 
   void set_backend(scoped_ptr<disk_cache::Backend> backend) {
     backend_ = backend.Pass();
   }
 
   base::WeakPtr<ServiceWorkerCache> AsWeakPtr();
 
  private:
   friend class base::RefCounted<ServiceWorkerCache>;
 
+  class BlobReader;
   struct KeysContext;
+  struct PutContext;
   typedef std::vector<disk_cache::Entry*> Entries;
 
   ServiceWorkerCache(
       const GURL& origin,
       const base::FilePath& path,
       net::URLRequestContext* request_context,
       const scoped_refptr<storage::QuotaManagerProxy>& quota_manager_proxy,
       base::WeakPtr<storage::BlobStorageContext> blob_context);
 
   // Operations in progress will complete after the cache is deleted but pending
   // operations (those operations waiting for init to finish) won't.
   virtual ~ServiceWorkerCache();
 
-  void PutImpl(scoped_ptr<ServiceWorkerFetchRequest> request,
-               scoped_ptr<ServiceWorkerResponse> response,
-               scoped_ptr<storage::BlobDataHandle> blob_data_handle,
-               const ResponseCallback& callback);
+  // Put callbacks.
+  static void PutImpl(scoped_ptr<PutContext> put_context);
+  static void PutDidCreateEntry(scoped_ptr<PutContext> put_context, int rv);
+  static void PutDidWriteHeaders(scoped_ptr<PutContext> put_context,
+                                 int expected_bytes,
+                                 int rv);
+  static void PutDidWriteBlobToCache(scoped_ptr<PutContext> put_context,
+                                     scoped_ptr<BlobReader> blob_reader,
+                                     disk_cache::ScopedEntryPtr entry,
+                                     bool success);
 
   // Static callbacks for the Keys function.
   static void KeysDidOpenNextEntry(scoped_ptr<KeysContext> keys_context,
                                    int rv);
   static void KeysProcessNextEntry(scoped_ptr<KeysContext> keys_context,
                                    const Entries::iterator& iter);
   static void KeysDidReadMetadata(
       scoped_ptr<KeysContext> keys_context,
       const Entries::iterator& iter,
       scoped_ptr<ServiceWorkerCacheMetadata> metadata);
@@ skipping 20 matching lines @@
   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_