Plumb network stack information about existence of cached copy

net/http/http_cache.cc

Index: net/http/http_cache.cc
diff --git a/net/http/http_cache.cc b/net/http/http_cache.cc
index 4402da8cab4ea9ea49afc47c0afa4bf82ed3fea2..8e15b760f68ae0218bc754ad665d19d0002a4756 100644
--- a/net/http/http_cache.cc
+++ b/net/http/http_cache.cc
@@ -467,6 +467,13 @@ HttpNetworkSession* HttpCache::GetSession() {
   return network->GetSession();
 }
 
+scoped_ptr<HttpTransactionFactory> HttpCache::SetNetworkLayerForTesting(
+    scoped_ptr<HttpTransactionFactory> new_network_layer) {

[mmenke, 2014/01/23 20:40:52]

Suggest calling this "SetHttpNetworkTransactionFactoryForTesting". 
"NetworkLayer" is too weird (We also aren't setting the FtpTransactionFactory,
so it's not the entire network layer).

I know it's called network_layer_ internally, but I've always found that
confusing.

[Randy Smith (Not in Mondays), 2014/01/25 21:11:31]

Done.

+  scoped_ptr<HttpTransactionFactory> old_network_layer(network_layer_.Pass());
+  network_layer_ = new_network_layer.Pass();
+  return old_network_layer.Pass();
+}
+
 //-----------------------------------------------------------------------------
 
 int HttpCache::CreateBackend(disk_cache::Backend** backend,