Change polymer tests to use internal test_controller, not unittest/test_controller.

pkg/polymer/lib/src/build/linter.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.
 
 /**
  * Logic to validate that developers are correctly using Polymer constructs.
  * This is mainly used to produce warnings for feedback in the editor.
  */
 library polymer.src.build.linter;
 
@@ skipping 202 matching lines @@
       ? extendsTag : extendsType.baseExtendsTag;
 
   _ElementSummary(this.tagName, this.extendsTag, this.span);
 
   String toString() => "($tagName <: $extendsTag)";
 }
 
 class _LinterVisitor extends TreeVisitor {
   TransformLogger _logger;
   bool _inPolymerElement = false;
-  bool _dartJSSeen = false;
   bool _dartTagSeen = false;
   bool _isEntrypoint;
   Map<String, _ElementSummary> _elements;
 
   _LinterVisitor(this._logger, this._elements, this._isEntrypoint) {
     // We normalize the map, so each element has a direct reference to any
     // element it extends from.
     for (var tag in _elements.values) {
       var extendsTag = tag.extendsTag;
       if (extendsTag == null) continue;
@@ skipping 128 matching lines @@
       }
       _dartTagSeen = true;
     }
 
     if (src == null) return;
 
     if (src == 'packages/polymer/boot.js') {
       _logger.warning(BOOT_JS_DEPRECATED, span: node.sourceSpan);
       return;
     }
-    if (src == 'packages/browser/dart.js' ||
-        src == 'packages/unittest/test_controller.js') {
-      _dartJSSeen = true;
-      return;
-    }
 
     if (src.endsWith('.dart') && !isDart) {
       _logger.warning('Wrong script type, expected type="application/dart".',
           span: node.sourceSpan);
       return;
     }
 
     if (!src.endsWith('.dart') && isDart) {
       _logger.warning('"application/dart" scripts should '
           'use the .dart file extension.',
@@ skipping 148 matching lines @@
     'Make sure the script tag is placed after all HTML imports.';
 
 const String BOOT_JS_DEPRECATED =
     '"boot.js" is now deprecated. Instead, you can initialize your polymer '
     'application by calling "initPolymer()" in your main. If you don\'t have a '
     'main, then you can include our generic main by adding the following '
     'script tag to your page: \'<script type="application/dart">export '
     '"package:polymer/init.dart";</script>\'. Additionally you need to '
     'include: \'<script src="packages/browser/dart.js"></script>\' in the page '
     'too. Make sure these script tags come after all HTML imports.';