Change error message for WebSocket tunnel failure.

net/websockets/websocket_test_util.h

Index: net/websockets/websocket_test_util.h
diff --git a/net/websockets/websocket_test_util.h b/net/websockets/websocket_test_util.h
index 5c7db80eac748fe676394e5b221cf39866bc38ff..f9bf96107ded5c8ed3d06681c1d28adfc461ea12 100644
--- a/net/websockets/websocket_test_util.h
+++ b/net/websockets/websocket_test_util.h
@@ -27,6 +27,7 @@ namespace net {
 class BoundNetLog;
 class DeterministicMockClientSocketFactory;
 class DeterministicSocketData;
+class ProxyService;
 class URLRequestContext;
 class WebSocketHandshakeStreamCreateHelper;
 struct SSLSocketDataProvider;
@@ -123,6 +124,12 @@ struct WebSocketTestURLRequestContextHost {
   void AddSSLSocketDataProvider(
       scoped_ptr<SSLSocketDataProvider> ssl_socket_data);
 
+  // Allow a proxy to be set. Usage:
+  //   SetProxyConfig("proxy1:8000");
+  // Any syntax accepted by net::ProxyConfig::ParseFromString() will work.
+  // Do not call after GetURLRequestContext() has been called.
+  void SetProxyConfig(const std::string& proxy_rules);
+
   // Call after calling one of SetExpections() or AddRawExpectations(). The
   // returned pointer remains owned by this object.
   TestURLRequestContext* GetURLRequestContext();
@@ -131,6 +138,7 @@ struct WebSocketTestURLRequestContextHost {
   WebSocketDeterministicMockClientSocketFactoryMaker maker_;
   TestURLRequestContext url_request_context_;
   TestNetworkDelegate network_delegate_;
+  scoped_ptr<ProxyService> proxy_service_;
   bool url_request_context_initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(WebSocketTestURLRequestContextHost);