Reland support for firefox jsshell.

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 451 matching lines @@
       args = new List.from(args);
       String tempDir = createOutputDirectory(info.filePath, '');
       args.add('--out=$tempDir/out.js');
       List<Command> commands = <Command>[new Command(shellPath(), args)];
       if (info.hasCompileError) {
         // Do not attempt to run the compiled result. A compilation
         // error should be reported by the compilation command.
       } else if (configuration['runtime'] == 'd8') {
         var d8 = TestUtils.d8FileName(configuration);
         commands.add(new Command(d8, ['$tempDir/out.js']));
+      } else if (configuration['runtime'] == 'jsshell') {
+        var jsshell = TestUtils.jsshellFileName(configuration);
+        commands.add(new Command(jsshell, ['$tempDir/out.js']));
       }
       return commands;
 
     case 'dart2dart':
       var compilerArguments = new List.from(args);
       var additionalFlags =
           configuration['additional-compiler-flags'].split(' ');
       for (final flag in additionalFlags) {
         if (flag.isEmpty()) continue;
         compilerArguments.add(flag);
@@ skipping 909 matching lines @@
         args.add('--enable-checked-mode');
       }
       // args.add("--verbose");
       if (!isBrowserRuntime(configuration['runtime'])) {
         args.add("--allow-mock-compilation");
       }
     }
     return args;
   }
 
+  static String jsshellFileName(Map configuration) {
+    var executableSuffix = executableSuffix('jsshell');
+    var executable = 'jsshell$executableSuffix';
+    var jsshellDir = '${dartDir()}/tools/testing/bin';
+    return '$jsshellDir/$executable';
+  }
+
   static bool isBrowserRuntime(String runtime) => Contains(
       runtime,
       const <String>['drt',
                      'dartium',
                      'ie',
                      'safari',
                      'opera',
                      'chrome',
                      'ff']);
+
+  static bool isJsCommandLineRuntime(String runtime) =>
+      Contains(runtime, const <String>['d8', 'jsshell']);
+
 }
 
 class SummaryReport {
   static int total = 0;
   static int skipped = 0;
   static int noCrash = 0;
   static int pass = 0;
   static int failOk = 0;
   static int fail = 0;
   static int crash = 0;
@@ skipping 33 matching lines @@
  * $noCrash tests are expected to be flaky but not crash
  * $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
 """;
     print(report);
    }
 }