Remove HTTP cache Record/Playback support

net/http/http_cache.h

 // Copyright (c) 2012 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 54 matching lines @@
 class ViewCacheHelper;
 struct HttpRequestInfo;
 
 class NET_EXPORT HttpCache : public HttpTransactionFactory,
                              NON_EXPORTED_BASE(public base::NonThreadSafe) {
  public:
   // The cache mode of operation.
   enum Mode {
     // Normal mode just behaves like a standard web cache.
     NORMAL = 0,
-    // Record mode caches everything for purposes of offline playback.
-    RECORD,
-    // Playback mode replays from a cache without considering any
-    // standard invalidations.
-    PLAYBACK,
     // Disables reads and writes from the cache.
     // Equivalent to setting LOAD_DISABLE_CACHE on every request.
     DISABLE
   };
 
   // A BackendFactory creates a backend object to be used by the HttpCache.
   class NET_EXPORT BackendFactory {
    public:
     virtual ~BackendFactory() {}
 
@@ skipping 387 matching lines @@
   scoped_ptr<base::Clock> clock_;
 
   base::WeakPtrFactory<HttpCache> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpCache);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_H_