Remove .writeStream, .consume and rewrite IOSink to correctly implement a (sane) well-defined behav…

sdk/lib/io/http.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;
 
 /**
  * HTTP status codes.
  */
 abstract class HttpStatus {
@@ skipping 685 matching lines @@
  * If no charset is provided the default of ISO-8859-1 (Latin 1) will
  * be used.
  *
  *     HttpResponse response = ...
  *     response.headers.add(HttpHeaders.CONTENT_TYPE, "text/plain");
  *     response.write(...);  // Strings written will be ISO-8859-1 encoded.
  *
  * If an unsupported encoding is used an exception will be thrown if
  * using one of the write methods taking a string.
  */
-abstract class HttpResponse implements IOSink<HttpResponse> {
+abstract class HttpResponse implements IOSink {
   // TODO(ajohnsen): Add documentation of how to pipe a file to the response.
   /**
    * Gets and sets the content length of the response. If the size of
    * the response is not known in advance set the content length to
    * -1 - which is also the default if not set.
    */
   int contentLength;
 
   /**
    * Gets and sets the status code. Any integer value is accepted. For
@@ skipping 288 matching lines @@
  * If no charset is provided the default of ISO-8859-1 (Latin 1) will
  * be used.
  *
  *     HttpClientRequest request = ...
  *     request.headers.add(HttpHeaders.CONTENT_TYPE, "text/plain");
  *     request.write(...);  // Strings written will be ISO-8859-1 encoded.
  *
  * If an unsupported encoding is used an exception will be thrown if
  * using one of the write methods taking a string.
  */
-abstract class HttpClientRequest
-    implements IOSink<HttpClientResponse> {
+abstract class HttpClientRequest implements IOSink {
   /**
    * Gets and sets the content length of the request. If the size of
    * the request is not known in advance set content length to -1,
    * which is also the default.
    */
   int contentLength;
 
   /**
    * Returns the request headers.
    */
@@ skipping 238 matching lines @@
 class RedirectLimitExceededException extends RedirectException {
   const RedirectLimitExceededException(List<RedirectInfo> redirects)
       : super("Redirect limit exceeded", redirects);
 }
 
 
 class RedirectLoopException extends RedirectException {
   const RedirectLoopException(List<RedirectInfo> redirects)
       : super("Redirect loop detected", redirects);
 }