Temporary: Detect WebSocket destruction order problem

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 9ae55047c04a2afb35dc5a6a98e7233731c77fb5..f9a39fee9ab75954a8334937645e663b41d7ccbb 100644
--- a/net/http/http_network_session.h
+++ b/net/http/http_network_session.h
@@ -282,6 +282,10 @@ class NET_EXPORT HttpNetworkSession
                     SSLConfig* server_config,
                     SSLConfig* proxy_config) const;
 
+  // TODO(ricea): Remove this by October 2016.
+  void IncrementActiveWebSockets() { ++active_websockets_; }
+  void DecrementActiveWebSockets() { --active_websockets_; }
+
  private:
   friend class HttpNetworkSessionPeer;
 
@@ -316,6 +320,9 @@ class NET_EXPORT HttpNetworkSession
   Params params_;
 
   std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
+
+  // TODO(ricea): Remove this by October 2016.
+  int active_websockets_ = 0;
 };
 
 }  // namespace net