Fix an analyzer error in pkg/http.

pkg/http/lib/browser_client.dart

 // Copyright (c) 2012, 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.
 
 library http.browser_client;
 
 import 'dart:async';
 import 'dart:html';
-import 'dart:typed_data';
 
 import 'package:stack_trace/stack_trace.dart';
 
 import 'src/base_client.dart';
 import 'src/base_request.dart';
 import 'src/byte_stream.dart';
 import 'src/exception.dart';
 import 'src/streamed_response.dart';
 
 // TODO(nweiz): Move this under src/, re-export from lib/http.dart, and use this
@@ skipping 39 matching lines @@
           completer.complete(new StreamedResponse(
               new ByteStream.fromBytes(body),
               xhr.status,
               contentLength: body.length,
               request: request,
               headers: xhr.responseHeaders,
               reasonPhrase: xhr.statusText));
         });
 
         reader.onError.first.then((error) {
-          completer.complete(
+          completer.completeError(

[Bob Nystrom, 2014/05/05 19:59:34]

Oof. Oops.

[nweiz, 2014/05/05 20:00:14]

Luckily I don't think this code path can actually be hit, since I'm pretty sure
XHRs will always return valid blobs.

               new ClientException(error.toString(), request.url),
               new Chain.current());
         });
 
         reader.readAsArrayBuffer(blob);
       });
 
       xhr.onError.first.then((_) {
         // Unfortunately, the underlying XMLHttpRequest API doesn't expose any
         // specific information about the error itself.
         completer.completeError(
             new ClientException("XMLHttpRequest error.", request.url),
             new Chain.current());
       });
 
       xhr.send(bytes);
       return completer.future.whenComplete(() => _xhrs.remove(xhr));
     });
   }
 
   /// Closes the client.
   ///
   /// This terminates all active requests.
   void close() {
     for (var xhr in _xhrs) {
       xhr.abort();
     }
   }
 }