pkg/csslib: Remove a number of unused members, prepare for release

test/nested_test.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.
 
 library nested_test;
 
 import 'package:test/test.dart';
 
 import 'testing.dart';
 
@@ skipping 323 matching lines @@
   height: 30px;
 }
 span {
   color: #1f1f2f;
 }''';
 
   compileAndValidate(input, generated);
 }
 
 void mediaNesting() {
-  var errors = [];
-
   final input = r'''
 @media screen and (-webkit-min-device-pixel-ratio:0) {
   #toggle-all {
     image: url(test.jpb);
     div, table {
       background: none;
       a { width: 100px; }
     }
     color: red;
   }
 }
 ''';
   final generated = r'''@media screen AND (-webkit-min-device-pixel-ratio:0) {
 #toggle-all {
   image: url("test.jpb");
   color: #f00;
 }
 #toggle-all div, #toggle-all table {
   background: none;
 }
 #toggle-all div a, #toggle-all table a {
   width: 100px;
 }
 }''';
 
   compileAndValidate(input, generated);
 }
 
 void simpleThis() {
-  final errors = [];
   final input = '''#header {
   h1 {
     font-size: 26px;
     font-weight: bold;
   }
   p { font-size: 12px;
     a { text-decoration: none;
       &:hover { border-width: 1px }
     }
   }
@@ skipping 13 matching lines @@
   text-decoration: none;
 }
 #header p a:hover {
   border-width: 1px;
 }''';
 
   compileAndValidate(input, generated);
 }
 
 void complexThis() {
-  var errors = [];
-
   final input1 = r'''
 .light {
   .leftCol {
     .textLink {
       color: fooL1;
       &:hover { color: barL1;}
     }
     .picLink {
       background-image: url(/fooL1.jpg);
       &:hover { background-image: url(/barL1.jpg);}
@@ skipping 56 matching lines @@
   color: fooL3;
 }
 .light .rightCol .textLink:hover {
   color: barL3;
 }''';
 
   compileAndValidate(input2, generated2);
 }
 
 variationsThis() {
-  var errors = [];
-
   final input1 = r'''
 .textLink {
   a {
     light .leftCol & {
       color: red;
     }
   }
 }''';
   final generated1 = r'''.textLink {
 }
@@ skipping 91 matching lines @@
   final input10 = r'''.textLink { a { & & { color: red; } } }''';
   final generated10 = r'''.textLink {
 }
 .textLink a .textLink a {
   color: #f00;
 }''';
   compileAndValidate(input10, generated10);
 }
 
 thisCombinator() {
-  var errors = [];
   var input = r'''
 .btn {
   color: red;
 }
 .btn + .btn {
   margin-left: 5px;
 }
 input.second {
   & + label {
     color: blue;
@@ skipping 19 matching lines @@
 main() {
   test('Selector and Nested Variations', selectorVariations);
   test('Simple nesting', simpleNest);
   test('Complex nesting', complexNest);
   test('@media nesting', mediaNesting);
   test('Simple &', simpleThis);
   test("Variations &", variationsThis);
   test('Complex &', complexThis);
   test('& with + selector', thisCombinator);
 }