anchor.diff:    }
   }
   
  -class Dart2AppSnapshotCompilerConfiguration extends CompilerConfiguration {
  -  Dart2AppSnapshotCompilerConfiguration({bool isDebug, bool isChecked})
  +class AppJitCompilerConfiguration extends CompilerConfiguration {
  +  AppJitCompilerConfiguration({bool isDebug, bool isChecked})
         : super._subclass(isDebug: isDebug, isChecked: isChecked);
   
     int computeTimeoutMultiplier() {
  
positive.code:             extraDart2jsOptions:
                  TestUtils.getExtraOptions(configuration, 'dart2js_options'));
        case 'app_jit':
          return new Dart2AppSnapshotCompilerConfiguration(
              isDebug: isDebug, isChecked: isChecked);
        case 'precompiler':
          return new PrecompilerCompilerConfiguration(
  
negative.code:       cc_flags = "-m32";
      } else if (arch == 'arm') {
        cc_flags = null;
      } else if (arch == 'arm64') {
        cc_flags = null;
      } else if (arch == 'mips') {
        cc_flags = "-EL";
      } else {
  