Always present data from http through a view.

sdk/lib/io/http_parser.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;
 
 // Global constants.
 class _Const {
   // Bytes for "HTTP".
   static const HTTP = const [72, 84, 84, 80];
@@ skipping 721 matching lines @@
         case _State.CHUNKED_BODY_DONE_LF:
           _expect(byte, _CharCode.LF);
           _reset();
           _closeIncoming();
           break;
 
         case _State.BODY:
           // The body is not handled one byte at a time but in blocks.
           _index--;
           int dataAvailable = _buffer.length - _index;
-          List<int> data;
-          if (_remainingContent == -1 ||
-              dataAvailable <= _remainingContent) {
-            if (_index == 0) {
-              data = _buffer;
-            } else {
-              data = new Uint8List.view(_buffer.buffer,
-                                        _index,
-                                        dataAvailable);
-            }
-          } else {
-            data = new Uint8List.view(_buffer.buffer,
-                                      _index,
-                                      _remainingContent);
+          if (_remainingContent >= 0 && dataAvailable > _remainingContent) {
+            dataAvailable = _remainingContent;
           }
+          // Always present the data as a view. This way we can handle all
+          // cases like this, and the user will not experince different data
+          // typed (which could lead to polymorphic user code).
+          List<int> data = new Uint8List.view(_buffer.buffer,
+                                              _buffer.offsetInBytes + _index,
+                                              dataAvailable);
           _bodyController.add(data);
           if (_remainingContent != -1) {
             _remainingContent -= data.length;
           }
           _index += data.length;
           if (_remainingContent == 0) {
             if (!_chunked) {
               _reset();
               _closeIncoming();
             } else {
@@ skipping 262 matching lines @@
     }
   }
 
   void _reportError(error, [stackTrace]) {
     if (_socketSubscription != null) _socketSubscription.cancel();
     _state = _State.FAILURE;
     _controller.addError(error, stackTrace);
     _controller.close();
   }
 }