[CacheStorage] Initialize the cache backend immediately upon opening

content/browser/cache_storage/cache_storage_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_CACHE_STORAGE_CACHE_STORAGE_CACHE_H_
 #define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_CACHE_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 168 matching lines @@
 
   CacheStorageCache(
       const GURL& origin,
       const std::string& cache_name,
       const base::FilePath& path,
       CacheStorage* cache_storage,
       scoped_refptr<net::URLRequestContextGetter> request_context_getter,
       scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy,
       base::WeakPtr<storage::BlobStorageContext> blob_context);
 
-  // Returns true if the backend is ready to operate.
-  bool LazyInitialize();
-
   // Returns all entries in this cache.
   void OpenAllEntries(const OpenAllEntriesCallback& callback);
   void DidOpenNextEntry(std::unique_ptr<OpenAllEntriesContext> entries_context,
                         const OpenAllEntriesCallback& callback,
                         int rv);
 
   // Match callbacks
   void MatchImpl(std::unique_ptr<ServiceWorkerFetchRequest> request,
                  const ResponseCallback& callback);
   void MatchDidOpenEntry(std::unique_ptr<ServiceWorkerFetchRequest> request,
@@ skipping 124 matching lines @@
                                   int64_t cache_size);
 
   // 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 CacheStorageCache::ErrorCallback& callback,
                               std::unique_ptr<ScopedBackendPtr> backend_ptr,
                               int rv);
 
   void InitBackend();
-  void InitDidCreateBackend(CacheStorageError cache_create_error);
-  void InitGotCacheSize(CacheStorageError cache_create_error, int cache_size);
+  void InitDidCreateBackend(const base::Closure& callback,
+                            CacheStorageError cache_create_error);
+  void InitGotCacheSize(const base::Closure& callback,
+                        CacheStorageError cache_create_error,
+                        int cache_size);
 
   void PendingClosure(const base::Closure& callback);
   void PendingErrorCallback(const ErrorCallback& callback,
                             CacheStorageError error);
   void PendingResponseCallback(
       const ResponseCallback& callback,
       CacheStorageError error,
       std::unique_ptr<ServiceWorkerResponse> response,
       std::unique_ptr<storage::BlobDataHandle> blob_data_handle);
   void PendingResponsesCallback(
@@ skipping 40 matching lines @@
   bool memory_only_;
 
   base::WeakPtrFactory<CacheStorageCache> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CacheStorageCache);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_CACHE_H_