Allow HttpServer response to include custom headers.

net/server/http_server_response_info.h

Index: net/server/http_server_response_info.h
diff --git a/net/server/http_server_response_info.h b/net/server/http_server_response_info.h
new file mode 100644
index 0000000000000000000000000000000000000000..2b4d7fc732afae3a0c91d08af0f7ef96db5ef3a4
--- /dev/null
+++ b/net/server/http_server_response_info.h
@@ -0,0 +1,46 @@
+// Copyright (c) 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.
+
+#ifndef NET_SERVER_HTTP_SERVER_RESPONSE_INFO_H_
+#define NET_SERVER_HTTP_SERVER_RESPONSE_INFO_H_
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "net/http/http_status_code.h"
+
+namespace net {
+
+class HttpServerResponseInfo {
+ public:
+  // Creates a 200 OK HttpServerResponseInfo.
+  HttpServerResponseInfo();
+  explicit HttpServerResponseInfo(HttpStatusCode status_code);
+  ~HttpServerResponseInfo();
+
+  static HttpServerResponseInfo CreateFor404();
+  static HttpServerResponseInfo CreateFor500(const std::string& body);
+
+  void AddHeader(const std::string& name, const std::string& value);
+
+  // This also adds an appropriate Content-Length header.
+  void SetBody(const std::string& body, const std::string& content_type);
+
+  std::string Serialize() const;
+
+  HttpStatusCode status_code() const;
+  const std::string& body() const;
+
+ private:
+  typedef std::vector<std::pair<std::string, std::string> > Headers;
+
+  HttpStatusCode status_code_;
+  Headers headers_;
+  std::string body_;
+};
+
+}  // namespace net
+
+#endif  // NET_SERVER_HTTP_SERVER_RESPONSE_INFO_H_