Revert HTTP/0.9 removal (https://codereview.chromium.org/2144803002/)

net/websockets/websocket_stream_test.cc

 // Copyright 2013 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.
 
 #include "net/websockets/websocket_stream.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 670 matching lines @@
                                  NoSubProtocols(), LocalhostOrigin(),
                                  LocalhostUrl(), "", "", kRedirectResponse);
   WaitUntilConnectDone();
   EXPECT_TRUE(has_failed());
   EXPECT_EQ("Error during WebSocket handshake: Unexpected response code: 302",
             failure_message());
 }
 
 // Malformed responses should be rejected. HttpStreamParser will accept just
 // about any garbage in the middle of the headers. To make it give up, the junk
-// has to be at the start of the response.
+// has to be at the start of the response. Even then, it just gets treated as an
+// HTTP/0.9 response.
 TEST_F(WebSocketStreamCreateTest, MalformedResponse) {
   static const char kMalformedResponse[] =
       "220 mx.google.com ESMTP\r\n"
       "HTTP/1.1 101 OK\r\n"
       "Upgrade: websocket\r\n"
       "Connection: Upgrade\r\n"
       "Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=\r\n"
       "\r\n";
   CreateAndConnectCustomResponse("ws://localhost/", "localhost", "/",
                                  NoSubProtocols(), LocalhostOrigin(),
                                  LocalhostUrl(), "", "", kMalformedResponse);
   WaitUntilConnectDone();
   EXPECT_TRUE(has_failed());
-  EXPECT_EQ("Error during WebSocket handshake: net::ERR_INVALID_HTTP_RESPONSE",
+  EXPECT_EQ("Error during WebSocket handshake: Invalid status line",
             failure_message());
 }
 
 // Upgrade header must be present.
 TEST_F(WebSocketStreamCreateTest, MissingUpgradeHeader) {
   static const char kMissingUpgradeResponse[] =
       "HTTP/1.1 101 Switching Protocols\r\n"
       "Connection: Upgrade\r\n"
       "Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=\r\n"
       "\r\n";
@@ skipping 540 matching lines @@
                                   LocalhostOrigin(), LocalhostUrl(), "",
                                   std::move(socket_data));
   WaitUntilConnectDone();
   EXPECT_TRUE(has_failed());
   EXPECT_EQ("Establishing a tunnel via proxy server failed.",
             failure_message());
 }
 
 }  // namespace
 }  // namespace net