Remove deprecated StringBuffer.add, addAll and addCharCode.

sdk/lib/_internal/compiler/implementation/lib/core_patch.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.
 
 // Patch file for dart:core classes.
 
 import 'dart:_interceptors';
 import 'dart:_js_helper' show checkNull,
                               getRuntimeTypeString,
                               isJsArray,
@@ skipping 230 matching lines @@
   patch String toString() => _contents;
 }
 
 patch class NoSuchMethodError {
   patch String toString() {
     StringBuffer sb = new StringBuffer();
     int i = 0;
     if (_arguments != null) {
       for (; i < _arguments.length; i++) {
         if (i > 0) {
-          sb.add(", ");
+          sb.write(", ");
         }
-        sb.add(Error.safeToString(_arguments[i]));
+        sb.write(Error.safeToString(_arguments[i]));
       }
     }
     if (_namedArguments != null) {
       _namedArguments.forEach((String key, var value) {
         if (i > 0) {
-          sb.add(", ");
+          sb.write(", ");
         }
-        sb.add(key);
-        sb.add(": ");
-        sb.add(Error.safeToString(value));
+        sb.write(key);
+        sb.write(": ");
+        sb.write(Error.safeToString(value));
         i++;
       });
     }
     if (_existingArgumentNames == null) {
       return "NoSuchMethodError : method not found: '$_memberName'\n"
           "Receiver: ${Error.safeToString(_receiver)}\n"
           "Arguments: [$sb]";
     } else {
       String actualParameters = sb.toString();
       sb = new StringBuffer();
       for (int i = 0; i < _existingArgumentNames.length; i++) {
         if (i > 0) {
-          sb.add(", ");
+          sb.write(", ");
         }
-        sb.add(_existingArgumentNames[i]);
+        sb.write(_existingArgumentNames[i]);
       }
       String formalParameters = sb.toString();
       return "NoSuchMethodError: incorrect number of arguments passed to "
           "method named '$_memberName'\n"
           "Receiver: ${Error.safeToString(_receiver)}\n"
           "Tried calling: $_memberName($actualParameters)\n"
           "Found: $_memberName($formalParameters)";
     }
   }
 }
 
 patch class StackTrace {
   patch String get fullStackTrace {
     throw new UnsupportedError('fullStackTrace');
   }
 
   patch String get stackTrace {
     throw new UnsupportedError('stackTrace');
   }
 }