Revert of Remove reference counting from HttpNetworkSession.

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
diff --git a/chrome/browser/profiles/profile_io_data.h b/chrome/browser/profiles/profile_io_data.h
index f395307eebe3b42a096ff46781c597ba3ac16fc3..d90f71e094388fea11ac80f2cf568a6234d3df2c 100644
--- a/chrome/browser/profiles/profile_io_data.h
+++ b/chrome/browser/profiles/profile_io_data.h
@@ -383,12 +383,9 @@
   // URLRequests may be accessing.
   void DestroyResourceContext();
 
-  scoped_ptr<net::HttpNetworkSession> CreateHttpNetworkSession(
-      const ProfileParams& profile_params) const;
-
-  // Creates main network transaction factory.
+  // Creates network session and main network transaction factory.
   scoped_ptr<net::HttpCache> CreateMainHttpFactory(
-      net::HttpNetworkSession* session,
+      const ProfileParams* profile_params,
       net::HttpCache::BackendFactory* main_backend) const;
 
   // Creates network transaction factory.