Roll Observatory deps (charted -> ^0.3.0)

packages/csslib/lib/src/css_printer.dart

 // Copyright (c) 2013, 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.
 
 part of csslib.visitor;
 
 /**
  * Visitor that produces a formatted string representation of the CSS tree.
  */
 class CssPrinter extends Visitor {
@@ skipping 20 matching lines @@
 
   String get _newLine => prettyPrint ? '\n' : ' ';
   String get _sp => prettyPrint ? ' ' : '';
 
   // TODO(terry): When adding obfuscation we'll need isOptimized (compact w/
   //              obufuscation) and have isTesting (compact no obfuscation) and
   //              isCompact would be !prettyPrint.  We'll need another boolean
   //              flag for obfuscation.
   bool get _isTesting => !prettyPrint;
 
+  void visitCalcTerm(CalcTerm node) {
+    emit('${node.text}(');
+    node.expr.visit(this);
+    emit(')');
+  }
+
   void visitCssComment(CssComment node) {
     emit('/* ${node.comment} */');
   }
 
   void visitCommentDefinition(CommentDefinition node) {
     emit('<!-- ${node.comment} -->');
   }
 
   void visitMediaExpression(MediaExpression node) {
     emit(node.andOperator ? ' AND ' : ' ');
@@ skipping 456 matching lines @@
 
   void visitWildcard(Wildcard node) {
     emit('*');
   }
 
   void visitDartStyleExpression(DartStyleExpression node) {
     // TODO(terry): TBD
     throw UnimplementedError;
   }
 }