Remove now unnecessary trailing whitespaces.

tests/html/cssstyledeclaration_test.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.
 
 #library('CSSStyleDeclarationTest');
 #import('../../pkg/unittest/unittest.dart');
 #import('../../pkg/unittest/html_config.dart');
 #import('dart:html');
 
 main() {
@@ skipping 16 matching lines @@
     // These assertions throw a NotImplementedException in dartium:
     // Expect.isNull(style.parentRule);
     // Expect.isNull(style.getPropertyCSSValue('color'));
     // Expect.isNull(style.getPropertyShorthand('color'));
   });
 
   test('cssText is wrapped', () {
     var style = createTestStyle();
     expect(style.cssText,
       equals("color: blue; width: 2px !important; "
-             "-webkit-transform: rotate(90deg); "));
+             "-webkit-transform: rotate(90deg);"));
     style.cssText = "color: red";
-    expect(style.cssText, equals("color: red; "));
+    expect(style.cssText, equals("color: red;"));
   });
 
   test('length is wrapped', () {
     expect(createTestStyle(), hasLength(3));
   });
 
   test('getPropertyPriority is wrapped', () {
     var style = createTestStyle();
     expect(style.getPropertyPriority("color"), isEmpty);
     expect(style.getPropertyPriority("width"), equals("important"));
   });
 
   test('item is wrapped', () {
     var style = createTestStyle();
     expect(style.item(0), equals("color"));
     expect(style.item(1), equals("width"));
     expect(style.item(2), equals("-webkit-transform"));
   });
 
   test('removeProperty is wrapped', () {
     var style = createTestStyle();
     style.removeProperty("width");
     expect(style.cssText,
-      equals("color: blue; -webkit-transform: rotate(90deg); "));
+      equals("color: blue; -webkit-transform: rotate(90deg);"));
   });
 
   test('CSS property getters and setters', () {
     var style = createTestStyle();
     expect(style.color, equals("blue"));
     expect(style.width, equals("2px"));
     expect(style.transform, equals("rotate(90deg)"));
 
     style.color = "red";
     style.transform = "translate(10px, 20px)";
     expect(style.cssText,
       equals("color: red; width: 2px !important;"
-             " -webkit-transform: translate(10px, 20px); "));
+             " -webkit-transform: translate(10px, 20px);"));
   });
 }