Fix a number of editor errors and warnings in io tests

tests/standalone/src/io/ChunkedStreamTest.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.
 
 #import("dart:io");
 #import("dart:isolate");
 
 void test1() {
   void testWithChunkSize(var data, int chunkSize, Function testDone) {
-    InputStream list_input_stream = new ListInputStream();
+    ListInputStream list_input_stream = new ListInputStream();
     list_input_stream.write(data);
     list_input_stream.markEndOfStream();
     ChunkedInputStream stream = new ChunkedInputStream(list_input_stream);
     int chunkCount = 0;
     int byteCount = 0;
     void chunkData() {
       List<int> chunk = stream.read();
       if (byteCount + chunkSize < data.length) {
         Expect.equals(chunkSize, chunk.length);
       } else {
@@ skipping 40 matching lines @@
     Expect.equals(data.length, byteCount);
   }
 
   testWithChunkSize(data, 512, testDone);
   testWithChunkSize(data, 1024, testDone);
   testWithChunkSize(data, 2048, testDone);
 }
 
 
 void test2() {
-  InputStream s = new ListInputStream();
+  ListInputStream s = new ListInputStream();
   ChunkedInputStream stream = new ChunkedInputStream(s);
   stream.chunkSize = 5;
   ReceivePort donePort = new ReceivePort();
 
   var stage = 0;
 
   void chunkData() {
     var chunk;
     if (stage == 0) {
       Expect.equals(stream.chunkSize, 5);
@@ skipping 49 matching lines @@
   s.write([4, 5, 6]);  // 7 bytes written to stream.
 
   donePort.receive((x,y) => donePort.close());
 }
 
 
 main() {
   test1();
   test2();
 }