Add the ability for DevTools to wrap network transactions.

net/http/http_cache.h

Index: net/http/http_cache.h
diff --git a/net/http/http_cache.h b/net/http/http_cache.h
index dd9d0cdfcae36cfcbff10cbbeacc6874179768c9..250f81ce4fe3463f3f154632b72e9d305a6533f9 100644
--- a/net/http/http_cache.h
+++ b/net/http/http_cache.h
@@ -138,7 +138,8 @@ class NET_EXPORT HttpCache : public HttpTransactionFactory,
   // destroyed.
   HttpCache(HttpTransactionFactory* network_layer,
             NetLog* net_log,
-            BackendFactory* backend_factory);
+            BackendFactory* backend_factory,
+            bool setup_network_session);
 
   virtual ~HttpCache();
 
@@ -354,6 +355,10 @@ class NET_EXPORT HttpCache : public HttpTransactionFactory,
   bool RemovePendingTransactionFromPendingOp(PendingOp* pending_op,
                                              Transaction* trans);
 
+  // Instantiates and sets QUIC server info factory. Should be invoked only
+  // once for every network session.
+  void SetupNetworkSession(HttpNetworkSession* session);
+
   // Resumes processing the pending list of |entry|.
   void ProcessPendingQueue(ActiveEntry* entry);
 
@@ -389,7 +394,7 @@ class NET_EXPORT HttpCache : public HttpTransactionFactory,
 
   Mode mode_;
 
-  const scoped_ptr<QuicServerInfoFactoryAdaptor> quic_server_info_factory_;
+  scoped_ptr<QuicServerInfoFactoryAdaptor> quic_server_info_factory_;
 
   scoped_ptr<HttpTransactionFactory> network_layer_;