Simplify HttpCache/HttpNetworkLayer/HttpNetworkSession interaction.

net/http/http_cache.h

 // Copyright (c) 2010 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.
 
 // This file declares a HttpTransactionFactory implementation that can be
 // layered on top of another HttpTransactionFactory to add HTTP caching.  The
 // caching logic follows RFC 2616 (any exceptions are called out in the code).
 //
 // The HttpCache takes a disk_cache::Backend as a parameter, and uses that for
 // the cache storage.
@@ skipping 113 matching lines @@
             ProxyService* proxy_service,
             SSLConfigService* ssl_config_service,
             HttpAuthHandlerFactory* http_auth_handler_factory,
             HttpNetworkDelegate* network_delegate,
             NetLog* net_log,
             BackendFactory* backend_factory);
 
   // The disk cache is initialized lazily (by CreateTransaction) in  this case.
   // Provide an existing HttpNetworkSession, the cache can construct a
   // network layer with a shared HttpNetworkSession in order for multiple
-  // network layers to share information (e.g. authenication data). The
+  // network layers to share information (e.g. authentication data). The
   // HttpCache takes ownership of the |backend_factory|.
   HttpCache(HttpNetworkSession* session, BackendFactory* backend_factory);
 
   // Initialize the cache from its component parts, which is useful for
   // testing.  The lifetime of the network_layer and backend_factory are managed
   // by the HttpCache and will be destroyed using |delete| when the HttpCache is
   // destroyed.
   HttpCache(HttpTransactionFactory* network_layer,
             NetLog* net_log,
             BackendFactory* backend_factory);
@@ skipping 228 matching lines @@
   ScopedRunnableMethodFactory<HttpCache> task_factory_;
 
   scoped_ptr<PlaybackCacheMap> playback_cache_map_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpCache);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_H_