Fix crash on IP address change.

net/http/http_network_session.h

Index: net/http/http_network_session.h
diff --git a/net/http/http_network_session.h b/net/http/http_network_session.h
index 23ba52692dfbf1f26215794a58001e2813dbb675..8f85ce7171cbc2aa67718f701558507048723de1 100644
--- a/net/http/http_network_session.h
+++ b/net/http/http_network_session.h
@@ -8,7 +8,6 @@
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "net/base/host_resolver.h"
-#include "net/base/network_change_notifier.h"
 #include "net/base/ssl_client_auth_cache.h"
 #include "net/base/ssl_config_service.h"
 #include "net/http/http_alternate_protocols.h"
@@ -26,9 +25,7 @@ class SpdySessionPool;
 class NetworkChangeNotifier;
 
 // This class holds session objects used by HttpNetworkTransaction objects.
-class HttpNetworkSession
-    : public base::RefCounted<HttpNetworkSession>,
-      public NetworkChangeNotifier::Observer {
+class HttpNetworkSession : public base::RefCounted<HttpNetworkSession> {
  public:
   HttpNetworkSession(
       NetworkChangeNotifier* network_change_notifier,
@@ -36,6 +33,7 @@ class HttpNetworkSession
       ProxyService* proxy_service,
       ClientSocketFactory* client_socket_factory,
       SSLConfigService* ssl_config_service,
+      SpdySessionPool* spdy_session_pool,
       HttpAuthHandlerFactory* http_auth_handler_factory);
 
   HttpAuthCache* auth_cache() { return &auth_cache_; }
@@ -77,11 +75,9 @@ class HttpNetworkSession
     return http_auth_handler_factory_;
   }
 
-  // Flushes cached data in the HttpNetworkSession.
-  void Flush();
-
-  // NetworkChangeNotifier::Observer methods:
-  virtual void OnIPAddressChanged();
+  // Replace the current socket pool with a new one.  This effectively
+  // abandons the current pool.  This is only used for debugging.
+  void ReplaceTCPSocketPool();
 
   static void set_max_sockets_per_group(int socket_count);
 
@@ -97,9 +93,6 @@ class HttpNetworkSession
 
   ~HttpNetworkSession();
 
-  scoped_refptr<TCPClientSocketPool> CreateNewTCPSocketPool();
-  scoped_refptr<SOCKSClientSocketPool> CreateNewSOCKSSocketPool();
-
   // Total limit of sockets. Not a constant to allow experiments.
   static int max_sockets_;
 
@@ -115,10 +108,10 @@ class HttpNetworkSession
   SSLClientAuthCache ssl_client_auth_cache_;
   HttpAlternateProtocols alternate_protocols_;
   NetworkChangeNotifier* const network_change_notifier_;
-  ClientSocketFactory* socket_factory_;
-  scoped_refptr<HostResolver> host_resolver_;
   scoped_refptr<TCPClientSocketPool> tcp_socket_pool_;
   scoped_refptr<SOCKSClientSocketPool> socks_socket_pool_;
+  ClientSocketFactory* socket_factory_;
+  scoped_refptr<HostResolver> host_resolver_;
   scoped_refptr<ProxyService> proxy_service_;
   scoped_refptr<SSLConfigService> ssl_config_service_;
   scoped_refptr<SpdySessionPool> spdy_session_pool_;