Pass sharedOptions to the compilation command of a browser test.

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 1157 matching lines @@
     assert (['dart2js', 'dart2dart'].contains(compiler));
     String executable = compilerPath;
     List<String> args = TestUtils.standardOptions(configuration);
     String packageRoot =
       packageRootArgument(optionsFromFile['packageRoot']);
     if (packageRoot != null) {
       args.add(packageRoot);
     }
     args.add('--out=$outputFile');
     args.add(inputFile);
+    args.addAll(optionsFromFile['sharedOptions']);
     if (executable.endsWith('.dart')) {
       // Run the compiler script via the Dart VM.
       args.insert(0, executable);
       executable = dartShellFileName;
     }
     return CommandBuilder.instance.getCompilationCommand(
         compiler, outputFile, !useSdk,
         dart2JsBootstrapDependencies, compilerPath, args, configurationDir);
   }
 
@@ skipping 872 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);
    }
 }