Add new test suite for migrated blink tests.

test/message/testcfg.py

 # Copyright 2008 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 77 matching lines @@
     # Can't use utils.ReadLinesFrom() here because it strips whitespace.
     with open(expected_path) as f:
       for line in f:
         if line.startswith("#") or not line.strip(): continue
         expected_lines.append(line)
     raw_lines = output.stdout.splitlines()
     actual_lines = [ s for s in raw_lines if not self._IgnoreLine(s) ]
     env = { "basename": os.path.basename(testpath + ".js") }
     if len(expected_lines) != len(actual_lines):
       return True
-    for (expected, actual) in itertools.izip(expected_lines, actual_lines):
+    for (expected, actual) in itertools.izip_longest(
+        expected_lines, actual_lines, fillvalue=''):
       pattern = re.escape(expected.rstrip() % env)
       pattern = pattern.replace("\\*", ".*")
       pattern = "^%s$" % pattern
       if not re.match(pattern, actual):
         return True
     return False
 
   def StripOutputForTransmit(self, testcase):
     pass
 
 
 def GetSuite(name, root):
   return MessageTestSuite(name, root)