Http cache: Don't attempt to doom the same entry multiple times

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_
 #pragma once
@@ skipping 67 matching lines @@
   // In order to guarantee that the metadata is set to the correct entry, the
   // response (or response info) must be evaluated by the caller, for instance
   // to make sure that the response_time is as expected, before calling this
   // method.
   int WriteMetadata(IOBuffer* buf,
                     int buf_len,
                     const CompletionCallback& callback);
 
   // This transaction is being deleted and we are not done writing to the cache.
   // We need to indicate that the response data was truncated.  Returns true on
-  // success.
+  // success. Keep in mind that this operation may have side effects as deleting

[gavinp, 2012/05/09 22:10:12]

Nit: Keep in mind that this operation may have side effects, such as deleting
the active entry.

+  // the active entry.
   bool AddTruncatedFlag();
 
+  HttpCache::ActiveEntry* entry() { return entry_; }
+
   // Returns the LoadState of the writer transaction of a given ActiveEntry. In
   // other words, returns the LoadState of this transaction without asking the
   // http cache, because this transaction should be the one currently writing
   // to the cache entry.
   LoadState GetWriterLoadState() const;
 
   const CompletionCallback& io_callback() { return io_callback_; }
 
   const BoundNetLog& net_log() const;
 
@@ skipping 266 matching lines @@
   int write_len_;
   scoped_ptr<PartialData> partial_;  // We are dealing with range requests.
   uint64 final_upload_progress_;
   base::WeakPtrFactory<Transaction> weak_factory_;
   CompletionCallback io_callback_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_TRANSACTION_H_