Add a leg_only test suite, and make sure to run it in our presubmit script.

tools/testing/test_configuration.py

 # Copyright (c) 2011, 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.
 
 """Common Testconfiguration subclasses used to define a class of tests."""
 
 import atexit
 import fileinput
 import os
 import re
@@ skipping 16 matching lines @@
   pass
 
 
 class StandardTestConfiguration(test.TestConfiguration):
   """Configuration that looks for .dart files in the tests/*/src dirs."""
   LEGAL_KINDS = set(['compile-time error',
                      'runtime error',
                      'static type error',
                      'dynamic type error'])
 
-  def __init__(self, context, root):
-    super(StandardTestConfiguration, self).__init__(context, root)
+  def __init__(self, context, root, flags = []):
+    super(StandardTestConfiguration, self).__init__(context, root, flags)
 
   def _Cleanup(self, tests):
     """Remove any temporary files created by running the test."""
     if self.context.keep_temporary_files:
       return
 
     dirs = []
     for t in tests:
       if t.run_arch:
         temp_dir = t.run_arch.temp_dir
@@ skipping 19 matching lines @@
       tags = self.SplitMultiTest(test_path, filename)
     if component in ['dartium', 'chromium']:
       if tags:
         return []
       else:
         if vm_options_list:
           tests = []
           for options in vm_options_list:
             tests.append(test_case.BrowserTestCase(
                 self.context, test_path, filename, False, mode, arch, component,
-                options))
+                options + self.flags))
           return tests
         else:
           return [test_case.BrowserTestCase(
-              self.context, test_path, filename, False, mode, arch, component)]
+              self.context, test_path, filename, False, mode, arch, component,
+              options)]
     else:
       tests = []
       if tags:
         for tag in sorted(tags):
           kind, test_source = tags[tag]
           if not self.Contains(path, test_path + [tag]):
             continue
           tests.append(test_case.MultiTestCase(self.context,
                                                test_path + [tag],
                                                test_source,
                                                kind,
                                                mode, arch, component))
       else:
         if vm_options_list:
           for options in vm_options_list:
             tests.append(test_case.StandardTestCase(self.context,
-                test_path, filename, mode, arch, component, options))
+                test_path, filename, mode, arch, component,
+                options + self.flags))
         else:
           tests.append(test_case.StandardTestCase(self.context,
-              test_path, filename, mode, arch, component))
+              test_path, filename, mode, arch, component, self.flags))
       return tests
 
   def ListTests(self, current_path, path, mode, arch, component):
     """Searches for *Test.dart files and returns list of TestCases."""
     tests = []
     for root, unused_dirs, files in os.walk(os.path.join(self.root, 'src')):
       for f in [x for x in files if self.IsTest(x)]:
         if f.endswith('.dart'):
           test_path = current_path + [f[:-5]]  # Remove .dart suffix.
         elif f.endswith('.app'):
@@ skipping 189 matching lines @@
 
   def GetTestStatus(self, sections, defs):
     status = os.path.join(self.root, 'dartc.status')
     if os.path.exists(status):
       test.ReadConfigurationInto(status, sections, defs)
 
   def _Cleanup(self, tests):
     if not utils.Daemonize(): return
     os.execlp('rm', *(['rm', '-rf'] + [t.temp_dir for t in tests]))
     raise