Add HTTP server mojo interfaces.

mojo/services/network/public/interfaces/http_connection.mojom

+// 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.
+
+module mojo;
+
+import "network/public/interfaces/http_request.mojom";
+import "network/public/interfaces/http_response.mojom";
+import "network/public/interfaces/network_error.mojom";
+import "network/public/interfaces/web_socket.mojom";
+
+interface HttpConnection {
+  // Sets the OS send buffer size (in bytes) for the underlying socket.
+  SetSendBufferSize(uint32 size) => (NetworkError result);
+
+  // Sets the OS receive buffer size (in bytes) for the underlying socket.
+  SetReceiveBufferSize(uint32 size) => (NetworkError result);
+};
+
+interface HttpConnectionDelegate {
+  // Called when an HTTP request is received.
+  OnReceivedRequest(HttpRequest request) => (HttpResponse response);
+
+  // Called with an WebSocket request is received.
+  //
+  // If the delegate decides to accept the request, it should respond with
+  // non-null arguments in the callback. |send_stream| is a data pipe which
+  // should remain open for the lifetime of the WebSocket. Data to send over the
+  // WebSocket should be written to the producer end of the |send_stream|.
+  // |web_socket| will be already connected. There is no need to call Connect()
+  // on it. But |client| will still receive a DidConnect() notification.
+  OnReceivedWebSocketRequest(HttpRequest request)
+      => (WebSocket&? web_socket,
+          handle<data_pipe_consumer>? send_stream,
+          WebSocketClient? client);
+};