[CacheStorage] Simpler way to wrap callbacks to run pending operation completions

content/browser/cache_storage/cache_storage_cache.h

Index: content/browser/cache_storage/cache_storage_cache.h
diff --git a/content/browser/cache_storage/cache_storage_cache.h b/content/browser/cache_storage/cache_storage_cache.h
index 787e13ad24abb05254174bbcc78b7206de646028..ef9b361e5515f3e3e8fbab00a55c2d4e41f48259 100644
--- a/content/browser/cache_storage/cache_storage_cache.h
+++ b/content/browser/cache_storage/cache_storage_cache.h
@@ -336,24 +336,6 @@ class CONTENT_EXPORT CacheStorageCache {
   void InitDidCreateBackend(CacheStorageError cache_create_error);
   void InitGotCacheSize(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(
-      const ResponsesCallback& callback,
-      CacheStorageError error,
-      std::unique_ptr<Responses> responses,
-      std::unique_ptr<BlobDataHandles> blob_data_handles);
-  void PendingRequestsCallback(const RequestsCallback& callback,
-                               CacheStorageError error,
-                               std::unique_ptr<Requests> requests);
-  void PendingSizeCallback(const SizeCallback& callback, int64_t size);
-
   void PopulateResponseMetadata(const CacheMetadata& metadata,
                                 ServiceWorkerResponse* response);
   std::unique_ptr<storage::BlobDataHandle> PopulateResponseBody(