Http cache: Make sure that the memory used to receive the...

net/http/http_cache_unittest.cc

Index: net/http/http_cache_unittest.cc
===================================================================
--- net/http/http_cache_unittest.cc	(revision 56971)
+++ net/http/http_cache_unittest.cc	(working copy)
@@ -667,6 +667,7 @@
     }
   }
 
+  disk_cache::Backend** backend() { return backend_; }
   void set_fail(bool fail) { fail_ = fail; }
 
   net::CompletionCallback* callback() { return callback_; }
@@ -2019,10 +2020,12 @@
   // We cannot call FinishCreation because the factory itself will go away with
   // the cache, so grab the callback and attempt to use it.
   net::CompletionCallback* callback = factory->callback();
+  disk_cache::Backend** backend = factory->backend();
 
   cache.reset();
   MessageLoop::current()->RunAllPending();
 
+  *backend = NULL;
   callback->Run(net::ERR_ABORTED);
 }