Remove deprecated StringBuffer.add, addAll and addCharCode.

utils/testrunner/layout_test_controller.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.
 
 // The following set of variables should be set by the caller that
 // #sources this file.
 /** Whether to include elapsed time. */
 
 part of test_controller;
 
@@ skipping 224 matching lines @@
       var eol = '\n'.codeUnitAt(0);
       var pos = -1;
       var label = null;
       var done = false;
 
       while(pos < stdout.length) {
         var idx = stdout.indexOf(eol, ++pos);
         if (idx < 0) break;
         StringBuffer sb = new StringBuffer();
         for (var i = pos; i < idx; i++) {
-          sb.addCharCode(stdout[i]);
+          sb.writeCharCode(stdout[i]);
         }
         var line = sb.toString();
 
         if (label == null && line.startsWith(labelMarker)) {
           label = line.substring(labelMarker.length);
           if (label == 'NONEXISTENT') {
             complete();
           }
         } else if (line.startsWith(contentMarker)) {
           if (label == null) {
@@ skipping 57 matching lines @@
 
 void runPixelLayoutTests() {
   init();
   runPixelLayoutTest(0);
 }
 
 void runTextLayoutTests() {
   init();
   runTextLayoutTest(0);
 }