Changes to how we handle fancy stacks:

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 776 matching lines @@
               dart2JsBootstrapDependencies, compilerPath, args,
               configurationDir)];
       if (info.hasCompileError) {
         // Do not attempt to run the compiled result. A compilation
         // error should be reported by the compilation command.
       } else if (configuration['runtime'] == 'vm') {
         // TODO(antonm): support checked.
         var vmArguments = new List.from(vmOptions);
         vmArguments.addAll([
             '--ignore-unrecognized-flags', '$tempDir/out.dart']);
+        // Turn off fancy stacks.
+        if (!configuration['fancy-stacks']) {
+          vmArguments.add('--no-fancy-stacks');
+        }
         commands.add(CommandBuilder.instance.getCommand(
             "vm", vmFileName, vmArguments, configurationDir));
       } else {
         throw 'Unsupported runtime ${configuration["runtime"]} for dart2dart';
       }
       return commands;
 
     case 'none':
       var arguments = new List.from(vmOptions);
       arguments.addAll(args);
+      // Turn off fancy stacks.
+      if (!configuration['fancy-stacks']) {
+        arguments.add('--no-fancy-stacks');
+      }
       return <Command>[CommandBuilder.instance.getCommand(
           'vm', dartShellFileName, arguments, configurationDir)];
 
     case 'dartanalyzer':
     case 'dart2analyzer':
       return <Command>[CommandBuilder.instance.getAnalysisCommand(
           compiler, dartShellFileName, args, configurationDir,
           flavor: compiler)];
 
     default:
@@ skipping 142 matching lines @@
       RandomAccessFile htmlTest =
           new File(htmlPath).openSync(mode: FileMode.WRITE);
       String content = null;
       Path dir = filePath.directoryPath;
       String nameNoExt = filePath.filenameWithoutExtension;
       Path pngPath = dir.append('$nameNoExt.png');
       Path txtPath = dir.append('$nameNoExt.txt');
       Path expectedOutput = null;
       if (new File.fromPath(pngPath).existsSync()) {
         expectedOutput = pngPath;
-        content = getHtmlLayoutContents(scriptType, new Path("$scriptPath"));
+        content = getHtmlLayoutContents(scriptType, new Path("$scriptPath"),
+            configuration['fancy-stacks']);
       } else if (new File.fromPath(txtPath).existsSync()) {
         expectedOutput = txtPath;
-        content = getHtmlLayoutContents(scriptType, new Path("$scriptPath"));
+        content = getHtmlLayoutContents(scriptType, new Path("$scriptPath"),
+          configuration['fancy-stacks']);
       } else {
         content = getHtmlContents(filename, scriptType,
-            new Path("$scriptPath"));
+            new Path("$scriptPath"), configuration['fancy-stacks']);
       }
       htmlTest.writeStringSync(content);
       htmlTest.closeSync();
 
       // Construct the command(s) that compile all the inputs needed by the
       // browser test. For running Dart in DRT, this will be noop commands.
       List<Command> commands = [];
       if (compiler != 'none') {
         commands.add(_compileCommand(
             dartWrapperFilename, compiledDartWrapperFilename,
@@ skipping 969 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);
    }
 }