Revert "Dart2js support for custom element lifecycle events"

tools/testing/dart/test_suite.dart

 // Copyright (c) 2012, 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.
 
 /**
  * Classes and methods for enumerating and preparing tests.
  *
  * This library includes:
  *
  * - Creating tests by listing all the Dart files in certain directories,
@@ skipping 982 matching lines @@
         if (compiler != 'none' &&
             customHtml.readAsStringSync().contains('polymer/boot.js')) {
 
           commands.add(_polymerDeployCommand(
               customHtmlPath, tempDir, optionsFromFile));
 
           htmlPath = '$tempDir/test/$nameNoExt.html';
           dartWrapperFilename = '${htmlPath}_bootstrap.dart';
           compiledDartWrapperFilename = '$dartWrapperFilename.js';
         } else {
-          htmlPath = '$tempDir/test.html';
-          dartWrapperFilename = filePath.toNativePath();
-
-          var htmlContents = customHtml.readAsStringSync();
-          if (compiler == 'none') {
-            htmlContents = htmlContents.replaceAll('%TEST_SCRIPTS%',
-              '<script type="application/dart" '
-              'src="${_createUrlPathFromFile(filePath)}"></script>\n'
-              '<script type="text/javascript" '
-                  'src="/packages/browser/dart.js"></script>');
-          } else {
-            htmlContents = htmlContents.replaceAll('%TEST_SCRIPTS%',
-              '<script src="$nameNoExt.js"></script>');
-            compiledDartWrapperFilename = '$tempDir/$nameNoExt.js';
-          }
-          new File(htmlPath).writeAsStringSync(htmlContents);
+          htmlPath = customHtmlPath;
         }
       } else {
         htmlPath = '$tempDir/test.html';
         if (isWrappingRequired && !isWebTest) {
           // test.dart will import the dart test.
           _createWrapperFile(dartWrapperFilename, filePath);
         } else {
           dartWrapperFilename = filename;
         }
 
@@ skipping 1012 matching lines @@
  * $pass tests are expected to pass
  * $failOk tests are expected to fail that we won't fix
  * $fail tests are expected to fail that we should fix
  * $crash tests are expected to crash that we should fix
  * $timeout tests are allowed to timeout
  * $compileErrorSkip tests are skipped on browsers due to compile-time error
 """;
     print(report);
    }
 }