Remove reference counting from HttpNetworkSession.

net/url_request/url_request_context_builder.cc

Index: net/url_request/url_request_context_builder.cc
diff --git a/net/url_request/url_request_context_builder.cc b/net/url_request/url_request_context_builder.cc
index c2600712950ba1bc231254906f49ec4ede7beea1..130029170e54c08708abf855a18c39d90b4e6025 100644
--- a/net/url_request/url_request_context_builder.cc
+++ b/net/url_request/url_request_context_builder.cc
@@ -386,6 +386,9 @@ URLRequestContext* URLRequestContextBuilder::Build() {
   network_session_params.quic_connection_options =
       http_network_session_params_.quic_connection_options;
 
+  storage->set_http_network_session(
+      make_scoped_ptr(new HttpNetworkSession(network_session_params)));
+
   HttpTransactionFactory* http_transaction_factory = NULL;
   if (http_cache_enabled_) {
     HttpCache::BackendFactory* http_cache_backend = NULL;
@@ -398,13 +401,11 @@ URLRequestContext* URLRequestContextBuilder::Build() {
           HttpCache::DefaultBackend::InMemory(http_cache_params_.max_size);
     }
 
-    http_transaction_factory = new HttpCache(
-        network_session_params, http_cache_backend);
+    http_transaction_factory = new HttpCache(storage->http_network_session(),
+                                             http_cache_backend, true);
   } else {
-    scoped_refptr<HttpNetworkSession> network_session(
-        new HttpNetworkSession(network_session_params));
-
-    http_transaction_factory = new HttpNetworkLayer(network_session.get());
+    http_transaction_factory =
+        new HttpNetworkLayer(storage->http_network_session());
   }
   storage->set_http_transaction_factory(http_transaction_factory);