Remove stale-while-revalidate experimental implementation.

net/http/http_cache_transaction.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 HttpCache::Transaction, a private class of HttpCache so
 // it should only be included by http_cache.cc
 
 #ifndef NET_HTTP_HTTP_CACHE_TRANSACTION_H_
 #define NET_HTTP_HTTP_CACHE_TRANSACTION_H_
 
 #include <string>
 
+#include "base/memory/scoped_ptr.h"

[gavinp, 2015/06/16 23:54:46]

Why is this being added, and not, say, "base/memory/ref_counted.h" or <stdint.h>
which appear also required by our coding standard?

[Adam Rice, 2015/06/17 10:18:00]

When performing the original revert merge, I accidentally removed some
include-what-you-use fixes from http_cache.cc, which I then added back when I
noticed them. At the same time, I added this include. I can only assume that it
seemed like a good idea at the time.

I've moved it to a separate CL, along with what turned out to be a surprising
number of other include-what-you-use cleanups:
https://codereview.chromium.org/1178013004/

You may lgtm it or not at your leisure.

 #include "base/time/time.h"
 #include "net/base/completion_callback.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_cache.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_response_info.h"
 #include "net/http/http_transaction.h"
 #include "net/log/net_log.h"
 #include "net/socket/connection_attempts.h"
@@ skipping 310 matching lines @@
   // On success, handling_206_ will be set to true if we are processing a
   // partial entry.
   bool ValidatePartialResponse();
 
   // Handles a response validation error by bypassing the cache.
   void IgnoreRangeRequest();
 
   // Fixes the response headers to match expectations for a HEAD request.
   void FixHeadersForHead();
 
-  // Launches an asynchronous revalidation based on this transaction.
-  void TriggerAsyncValidation();
-
   // Changes the response code of a range request to be 416 (Requested range not
   // satisfiable).
   void FailRangeRequest();
 
   // Setups the transaction for reading from the cache entry.
   int SetupEntryForRead();
 
   // Reads data from the network.
   int ReadFromNetwork(IOBuffer* data, int data_len);
 
@@ skipping 129 matching lines @@
   BeforeProxyHeadersSentCallback before_proxy_headers_sent_callback_;
 
   base::WeakPtrFactory<Transaction> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Transaction);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_TRANSACTION_H_