Implement server push protocol 2.

net/http/http_network_layer.h

Index: net/http/http_network_layer.h
diff --git a/net/http/http_network_layer.h b/net/http/http_network_layer.h
index baa9608a458e486fe810bd5f2d0b705bdff8725c..c81230251fee7ed0d9d7bf8d4567f07163f0b7d5 100644
--- a/net/http/http_network_layer.h
+++ b/net/http/http_network_layer.h
@@ -39,6 +39,16 @@ class HttpNetworkLayer : public HttpTransactionFactory, public NonThreadSafe {
                    NetLog* net_log);
   // Construct a HttpNetworkLayer with an existing HttpNetworkSession which
   // contains a valid ProxyService.
+  HttpNetworkLayer(
+      ClientSocketFactory* socket_factory,
+      HostResolver* host_resolver,
+      ProxyService* proxy_service,
+      SSLConfigService* ssl_config_service,
+      SpdySessionPool* spdy_session_pool,
+      HttpAuthHandlerFactory* http_auth_handler_factory,
+      HttpNetworkDelegate* network_delegate,
+      NetLog* net_log);
+
   explicit HttpNetworkLayer(HttpNetworkSession* session);
   ~HttpNetworkLayer();