[Devtools] Allow User-Agent header override for Websockets

net/websockets/websocket_end_to_end_test.cc

 // Copyright 2014 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.
 
 // End-to-end tests for WebSocket.
 //
 // A python server is (re)started for each test, which is moderately
 // inefficient. However, it makes these tests a good fit for scenarios which
 // require special server configurations.
 
@@ skipping 253 matching lines @@
   // Send the connect request to |socket_url| and wait for a response. Returns
   // true if the handshake succeeded.
   bool ConnectAndWait(const GURL& socket_url) {
     if (!initialised_context_) {
       InitialiseContext();
     }
     url::Origin origin(GURL("http://localhost"));
     event_interface_ = new ConnectTestingEventInterface;
     channel_.reset(
         new WebSocketChannel(base::WrapUnique(event_interface_), &context_));
-    channel_->SendAddChannelRequest(GURL(socket_url), sub_protocols_, origin);
+    channel_->SendAddChannelRequest(
+        GURL(socket_url), sub_protocols_, origin, "");
     event_interface_->WaitForResponse();
     return !event_interface_->failed();
   }
 
   ConnectTestingEventInterface* event_interface_;  // owned by channel_
   std::unique_ptr<TestProxyDelegateWithProxyInfo> proxy_delegate_;
   TestURLRequestContext context_;
   std::unique_ptr<WebSocketChannel> channel_;
   std::vector<std::string> sub_protocols_;
   bool initialised_context_;
@@ skipping 228 matching lines @@
   GURL ws_url = ws_server.GetURL("header-continuation");
 
   EXPECT_TRUE(ConnectAndWait(ws_url));
   EXPECT_EQ("permessage-deflate; server_max_window_bits=10",
             event_interface_->extensions());
 }
 
 }  // namespace
 
 }  // namespace net