Update from https://crrev.com/304121

net/test/embedded_test_server/http_request.cc

 // Copyright (c) 2012 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/test/embedded_test_server/http_request.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
@@ skipping 65 matching lines @@
   return WAITING;
 }
 
 HttpRequestParser::ParseResult HttpRequestParser::ParseHeaders() {
   // Check if the all request headers are available.
   if (buffer_.find("\r\n\r\n", buffer_position_) == std::string::npos)
     return WAITING;
 
   // Parse request's the first header line.
   // Request main main header, eg. GET /foobar.html HTTP/1.1
+  std::string request_headers;
   {
     const std::string header_line = ShiftLine();
+    http_request_->all_headers += header_line + "\r\n";
     std::vector<std::string> header_line_tokens;
     base::SplitString(header_line, ' ', &header_line_tokens);
     DCHECK_EQ(3u, header_line_tokens.size());
     // Method.
     http_request_->method_string = header_line_tokens[0];
     http_request_->method = GetMethodType(base::StringToLowerASCII(
         header_line_tokens[0]));
     // Address.
     // Don't build an absolute URL as the parser does not know (should not
     // know) anything about the server address.
     http_request_->relative_url = header_line_tokens[1];
     // Protocol.
     const std::string protocol =
         base::StringToLowerASCII(header_line_tokens[2]);
     CHECK(protocol == "http/1.0" || protocol == "http/1.1") <<
         "Protocol not supported: " << protocol;
   }
 
   // Parse further headers.
   {
     std::string header_name;
     while (true) {
       std::string header_line = ShiftLine();
       if (header_line.empty())
         break;
 
+      http_request_->all_headers += header_line + "\r\n";
       if (header_line[0] == ' ' || header_line[0] == '\t') {
         // Continuation of the previous multi-line header.
         std::string header_value =
             Trim(header_line.substr(1, header_line.size() - 1));
         http_request_->headers[header_name] += " " + header_value;
       } else {
         // New header.
         size_t delimiter_pos = header_line.find(":");
         DCHECK_NE(std::string::npos, delimiter_pos) << "Syntax error.";
         header_name = Trim(header_line.substr(0, delimiter_pos));
@@ skipping 71 matching lines @@
     return METHOD_DELETE;
   } else if (token == "patch") {
     return METHOD_PATCH;
   }
   NOTREACHED() << "Method not implemented: " << token;
   return METHOD_UNKNOWN;
 }
 
 }  // namespace test_server
 }  // namespace net