Add deopt fuzzer tool.

tools/run-tests.py

 #!/usr/bin/env python
 #
 # Copyright 2012 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
@@ skipping 285 matching lines @@
                         mode_flags, options.verbose,
                         timeout, options.isolates,
                         options.command_prefix,
                         options.extra_flags)
 
   # Find available test suites and read test cases from them.
   variables = {
     "mode": mode,
     "arch": arch,
     "system": utils.GuessOS(),
-    "isolates": options.isolates
+    "isolates": options.isolates,
+    "deopt_fuzzer": False,
   }
   all_tests = []
   num_tests = 0
   test_id = 0
   for s in suites:
     s.ReadStatusFile(variables)
     s.ReadTestCases(ctx)
     if len(args) > 0:
       s.FilterTestCasesByArgs(args)
     all_tests += s.tests
@@ skipping 59 matching lines @@
   except KeyboardInterrupt:
     return 1
 
   if options.time:
     verbose.PrintTestDurations(suites, overall_duration)
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())