Removed fixed dependencies

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 123 matching lines @@
   void visitViewportDirective(ViewportDirective node) {
     emit('@${node.name}$_sp{$_newLine');
     node.declarations.visit(this);
     emit('}');
   }
 
   void visitMediaDirective(MediaDirective node) {
     emit('$_newLine@media');
     emitMediaQueries(node.mediaQueries);
     emit('$_sp{');
-    for (var ruleset in node.rulesets) {
+    for (var ruleset in node.rules) {
       ruleset.visit(this);
     }
     emit('$_newLine}');
   }
 
   void visitHostDirective(HostDirective node) {
     emit('$_newLine@host$_sp{');
-    for (var ruleset in node.rulesets) {
+    for (var ruleset in node.rules) {
       ruleset.visit(this);
     }
     emit('$_newLine}');
   }
 
   /**
    *  @page : pseudoPage {
    *    decls
    *  }
    */
@@ skipping 407 matching lines @@
 
   void visitWildcard(Wildcard node) {
     emit('*');
   }
 
   void visitDartStyleExpression(DartStyleExpression node) {
     // TODO(terry): TBD
     throw UnimplementedError;
   }
 }