Include HTTP library in the standalone VM

runtime/bin/http.dart

Index: runtime/bin/http.dart
diff --git a/samples/chat/http.dart b/runtime/bin/http.dart
similarity index 98%
rename from samples/chat/http.dart
rename to runtime/bin/http.dart
index c57e13561d07bc54de0d5872802fa51d4e00aa20..2969b76a98cb6fc2ebed7ebc6a351cf1754762af 100644
--- a/samples/chat/http.dart
+++ b/runtime/bin/http.dart
@@ -2,12 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#library("http");
-#import("dart:io");
-#source("http_impl.dart");
-#source("../../runtime/bin/buffer_list.dart");
-#source("../../runtime/bin/stream_util.dart");
-
 /**
  * HTTP status codes.
  */