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

net/http/http_cache_transaction.h

Index: net/http/http_cache_transaction.h
===================================================================
--- net/http/http_cache_transaction.h	(revision 134667)
+++ net/http/http_cache_transaction.h	(working copy)
@@ -85,9 +85,12 @@
 
   // 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