Fail WebSocket channel when handshake fails.

net/websockets/websocket_basic_handshake_stream.h

Index: net/websockets/websocket_basic_handshake_stream.h
diff --git a/net/websockets/websocket_basic_handshake_stream.h b/net/websockets/websocket_basic_handshake_stream.h
index 2e5b628cde6491e1b55cb34f14db5f54bd4ace87..8f3cdf5d8a54d6a8719418fc960fbf0087309d71 100644
--- a/net/websockets/websocket_basic_handshake_stream.h
+++ b/net/websockets/websocket_basic_handshake_stream.h
@@ -72,6 +72,8 @@ class NET_EXPORT_PRIVATE WebSocketBasicHandshakeStream
   // For tests only.
   void SetWebSocketKeyForTesting(const std::string& key);
 
+  virtual std::string GetFailureMessage() const OVERRIDE;
+
  private:
   // A wrapper for the ReadResponseHeaders callback that checks whether or not
   // the connection has been accepted.
@@ -114,6 +116,8 @@ class NET_EXPORT_PRIVATE WebSocketBasicHandshakeStream
   // The extension(s) selected by the server.
   std::string extensions_;
 
+  std::string failure_message_;
+
   DISALLOW_COPY_AND_ASSIGN(WebSocketBasicHandshakeStream);
 };