Always use --leg_only option.

dart/frog/presubmit.py

 #!/usr/bin/env python
 # 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.
 
 import optparse
 import os
 import stat
 import subprocess
 import sys
@@ skipping 22 matching lines @@
 
 def RunCommand(*arguments, **kwargs):
   pattern = None
   if 'pattern' in kwargs:
     pattern = kwargs['pattern']
   expected_exit_code = 0
   if 'exit_code' in kwargs:
     expected_exit_code = kwargs['exit_code']
   stdout = subprocess.PIPE
   if 'verbose' in kwargs and kwargs['verbose']:
+    print ' '.join(arguments)
     stdout = None
   try:
     proc = subprocess.Popen(arguments,
                             stdout=stdout,
                             stderr=subprocess.STDOUT)
     stdout = proc.communicate()[0]
     exit_code = proc.wait()
   except OSError as e:
     raise Error('%s: %s' % (arguments[0], e.strerror))
   if exit_code != expected_exit_code:
@@ skipping 82 matching lines @@
 
       # Run frogium client tests. This is a pretty quick test but
       # tends to uncover different issues due to the size/complexity
       # of the DOM APIs.
       cmd = test_cmd + ['--component=frogium', 'client']
       RunCommand(*cmd, verbose=True)
 
       # TODO(jimhug): Consider adding co19 back when it delivers more value
       #   than pain.
       # Run frogsh on most of the tests.
-      cmd = test_cmd + ['--component=frogsh', 'language', 'corelib', 'leg',
-                        'isolate', 'peg', 'leg_only', 'frog', 'css', 'await']
+      cmd = test_cmd + ['--component=frogsh', 'language', 'corelib',
+                        'isolate', 'peg', 'frog', 'css', 'await']
       RunCommand(*cmd, verbose=True)
 
     # Run leg on most of the tests.
     # TODO(ahe): Add co19 tests once leg gets more mature.
-    cmd = test_cmd + ['--component=leg',
-                      'language', 'corelib', 'leg', 'leg_only']
+    cmd = test_cmd + ['--component=leg', 'language', 'corelib', 'leg_only']
+    RunCommand(*cmd, verbose=True)
+
+    cmd = test_cmd + ['--component=vm', 'leg']
     RunCommand(*cmd, verbose=True)
 
 if __name__ == '__main__':
   try:
     sys.exit(main())
   except Error as e:
     sys.stderr.write('%s\n' % e)
     sys.exit(1)