[Devtools] Allow User-Agent header override for Websockets

net/websockets/websocket_stream_create_test_base.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_WEBSOCKETS_WEBSOCKET_STREAM_CREATE_TEST_BASE_H_
 #define NET_WEBSOCKETS_WEBSOCKET_STREAM_CREATE_TEST_BASE_H_
 
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 22 matching lines @@
   using HeaderKeyValuePair = std::pair<std::string, std::string>;
 
   WebSocketStreamCreateTestBase();
   virtual ~WebSocketStreamCreateTestBase();
 
   // A wrapper for CreateAndConnectStreamForTesting that knows about our default
   // parameters.
   void CreateAndConnectStream(const std::string& socket_url,
                               const std::vector<std::string>& sub_protocols,
                               const url::Origin& origin,
+                              const std::string& additional_headers,
                               std::unique_ptr<base::Timer> timer);
 
   static std::vector<HeaderKeyValuePair> RequestHeadersToVector(
       const HttpRequestHeaders& headers);
   static std::vector<HeaderKeyValuePair> ResponseHeadersToVector(
       const HttpResponseHeaders& headers);
 
   const std::string& failure_message() const { return failure_message_; }
   bool has_failed() const { return has_failed_; }
 
@@ skipping 26 matching lines @@
   base::RunLoop connect_run_loop_;
 
  private:
   class TestConnectDelegate;
   DISALLOW_COPY_AND_ASSIGN(WebSocketStreamCreateTestBase);
 };
 
 }  // namespace net
 
 #endif  // NET_WEBSOCKETS_WEBSOCKET_STREAM_CREATE_TEST_BASE_H_