Remove deprecated StringBuffer.add, addAll and addCharCode.

utils/template/parser.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 
 class TagStack {
   List<ASTNode> _stack;
 
   TagStack(var elem) : _stack = [] {
     _stack.add(elem);
   }
 
@@ skipping 654 matching lines @@
     if (_previousToken.kind == TokenKind.GREATER_THAN) {
       // If the next token is } could be the close template token.  If user
       // needs } as token in text node use the entity &125;
       // TODO(terry): Probably need a &RCURLY entity instead of 125.
       if (_peek() == TokenKind.ERROR) {
         // Backup, just past previous token, & rescan we're outside of the tag.
         tokenizer.index = _previousToken.end;
         _next(false);
       } else if (_peek() != TokenKind.RBRACE) {
         // Yes, grab the chars after the >
-        stringValue.add(_previousToken.source.text.substring(
+        stringValue.write(_previousToken.source.text.substring(
             this._previousToken.end, this._peekToken.start));
       }
     }
 
     // Gobble up everything until we hit <
     while (_peek() != TokenKind.LESS_THAN &&
            _peek() != TokenKind.START_COMMAND &&
            _peek() != TokenKind.END_COMMAND &&
            (_peek() != TokenKind.RBRACE ||
             (_peek() == TokenKind.RBRACE && inExpression)) &&
@@ skipping 13 matching lines @@
       var tok = _next(false);
       if (tok.kind == TokenKind.RBRACE && inExpression) {
         // We have an expression create the expression node, don't save the }
         inExpression = false;
         nodes.add(new TemplateExpression(stringValue.toString(),
           _makeSpan(start)));
         stringValue = new StringBuffer();
         start = _peekToken.start;
       } else if (tok.kind != TokenKind.START_EXPRESSION) {
         // Only save the the contents between ${ and }
-        stringValue.add(tok.text);
+        stringValue.write(tok.text);
       }
     }
 
     if (stringValue.length > 0) {
       nodes.add(new TemplateText(stringValue.toString(), _makeSpan(start)));
     }
 
     return nodes;
   }
 
 }