Remove deprecated StringBuffer.add, addAll and addCharCode.

utils/template/htmltree.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
 // BSD-style license that can be found in the LICENSE file.
 // Generated by scripts/tree_gen.py.
 
 /////////////////////////////////////////////////////////////////////////
 // CSS specific types:
 /////////////////////////////////////////////////////////////////////////
 
 class Identifier extends ASTNode {
@@ skipping 45 matching lines @@
 
   TemplateSignature(this.name, this.params, SourceSpan span): super(span);
 
   visit(TreeVisitor visitor) => visitor.visitTemplateSignature(this);
 
   String paramsAsString() {
     StringBuffer buff = new StringBuffer();
     bool first = true;
     for (final param in params) {
       if (!first) {
-        buff.add(", ");
+        buff.write(", ");
       }
       if (param['type'] != null) {
-        buff.add(param['type']);
-        buff.add(' ');
+        buff.write(param['type']);
+        buff.write(' ');
       }
-      buff.add(param['name']);
+      buff.write(param['name']);
       first = false;
     }
 
     return buff.toString();
   }
 
   String toString() => "template ${name}(${paramsAsString()})";
 }
 
 class TemplateChildren extends ASTNode {
@@ skipping 12 matching lines @@
   ASTNode get last => children.last;
   ASTNode removeLast() => children.removeLast();
   bool get anyChildren => children != null && children.length > 0;
 
   visit(TreeVisitor visitor) => visitor.visitTemplateChildren(this);
 
   String toString() {
     StringBuffer buff = new StringBuffer();
     if (children != null) {
       for (final child in children) {
-        buff.add(child.toString());
+        buff.write(child.toString());
       }
     }
 
     return buff.toString();
   }
 }
 
 class TemplateGetter extends ASTNode {
   String name;
   List<Map<Identifier, Identifier>> params;
   TemplateDocument docFrag;
 
   TemplateGetter(this.name, this.params, this.docFrag, SourceSpan span) :
       super(span);
 
   visit(TreeVisitor visitor) => visitor.visitTemplateGetter(this);
 
   String paramsAsString() {
     StringBuffer buff = new StringBuffer();
     bool first = true;
     for (final param in params) {
       if (!first) {
-        buff.add(", ");
+        buff.write(", ");
       }
       if (param['type'] != null && param['type'].length > 0) {
-        buff.add(param['type']);
-        buff.add(' ');
+        buff.write(param['type']);
+        buff.write(' ');
       }
-      buff.add(param['name']);
+      buff.write(param['name']);
       first = false;
     }
 
     return buff.toString();
   }
 
   String getterSignatureAsString() => "${name}(${paramsAsString()})";
 }
 
 class TemplateContent extends ASTNode {
@@ skipping 30 matching lines @@
   visit(TreeVisitor visitor) => visitor.visitTemplateElement(this);
 
   bool get hasVar => _varName != null;
   String get varName => hasVar ? _varName.value : null;
 
   String attributesToString() {
     StringBuffer buff = new StringBuffer();
 
     if (attributes != null) {
       for (final attr in attributes) {
-        buff.add(' ${attr.toString()}');
+        buff.write(' ${attr.toString()}');
       }
     }
 
     return buff.toString();
   }
 
   String get tagName => isFragment ?
     'root' : TokenKind.tagNameFromTokenId(tagTokenId);
 
   bool get scoped => !TokenKind.unscopedTag(tagTokenId);
 
   String tagStartToString() => "<${tagName}${attributesToString()}>";
 
   String tagEndToString() => "</${tagName}>";
 
   String toString() {
     StringBuffer buff = new StringBuffer(tagStartToString());
 
     if (children != null) {
       for (final child in children) {
-        buff.add(child.toString());
+        buff.write(child.toString());
       }
 
-      buff.add(tagEndToString());
+      buff.write(tagEndToString());
     }
 
     return buff.toString();
   }
 }
 
 class TemplateAttribute extends ASTNode {
   String name;
   String value;
 
@@ skipping 196 matching lines @@
     output.writeValue('params', node.params);
   }
 
   void visitTemplateGetter(TemplateGetter node) {
     output.heading('template getter', node.span);
     output.writeValue('getter Signature', node.getterSignatureAsString());
     visitTemplateDocument(node.docFrag);
   }
 }