Fix analyzer warnings in dart:io.

sdk/lib/io/http_impl.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
 part of dart.io;
 
 class _HttpIncoming extends Stream<List<int>> {
   final int _transferLength;
   final Completer _dataCompleter = new Completer();
   Stream<List<int>> _stream;
@@ skipping 410 matching lines @@
   }
 
   void _writeHeaders() {
     if (_headersWritten) return;
     _headersWritten = true;
     _ioSink.encoding = Encoding.ASCII;
     headers._synchronize();  // Be sure the 'chunked' option is updated.
     bool asGZip = false;
     bool isServerSide = this is _HttpResponse;
     if (isServerSide && headers.chunkedTransferEncoding) {
+      _HttpResponse response = this as _HttpResponse;

[Søren Gjesse, 2013/03/12 13:22:10]

You don't need "as _HttpResponse" here.

[Anders Johnsen, 2013/03/12 13:30:01]

The editor told me I did - see new CL :)

       List acceptEncodings =
-          _httpRequest.headers[HttpHeaders.ACCEPT_ENCODING];
+          response._httpRequest.headers[HttpHeaders.ACCEPT_ENCODING];
       List contentEncoding = headers[HttpHeaders.CONTENT_ENCODING];
       if (acceptEncodings != null &&
           acceptEncodings.any((encoding) => encoding.toLowerCase() == "gzip") &&
           contentEncoding == null) {
         headers.set(HttpHeaders.CONTENT_ENCODING, "gzip");
         asGZip = true;
       }
     }
     _writeHeader();
     _ioSink = new IOSink(new _HttpOutboundConsumer(_ioSink, _consume, asGZip));
@@ skipping 1266 matching lines @@
 
 
 class _RedirectInfo implements RedirectInfo {
   const _RedirectInfo(int this.statusCode,
                       String this.method,
                       Uri this.location);
   final int statusCode;
   final String method;
   final Uri location;
 }