Add flag to test harness to stop sorting test cases.

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 139 matching lines @@
   result.add_option("--no-network", "--nonetwork",
                     help="Don't distribute tests on the network",
                     default=(utils.GuessOS() != "linux"),
                     dest="no_network", action="store_true")
   result.add_option("--no-presubmit", "--nopresubmit",
                     help='Skip presubmit checks',
                     default=False, dest="no_presubmit", action="store_true")
   result.add_option("--no-snap", "--nosnap",
                     help='Test a build compiled without snapshot.',
                     default=False, dest="no_snap", action="store_true")
+  result.add_option("--no-sorting", "--nosorting",
+                    help="Don't sort tests according to duration of last run.",
+                    default=False, dest="no_sorting", action="store_true")
   result.add_option("--no-stress", "--nostress",
                     help="Don't run crankshaft --always-opt --stress-op test",
                     default=False, dest="no_stress", action="store_true")
   result.add_option("--no-variants", "--novariants",
                     help="Don't run any testing variants",
                     default=False, dest="no_variants", action="store_true")
   result.add_option("--variants",
                     help="Comma-separated list of testing variants")
   result.add_option("--outdir", help="Base directory with compile output",
                     default="out")
@@ skipping 234 matching lines @@
     else:
       timeout = TIMEOUT_DEFAULT;
 
   timeout *= TIMEOUT_SCALEFACTOR[mode]
   ctx = context.Context(arch, mode, shell_dir,
                         mode_flags, options.verbose,
                         timeout, options.isolates,
                         options.command_prefix,
                         options.extra_flags,
                         options.no_i18n,
-                        options.random_seed)
+                        options.random_seed,
+                        options.no_sorting)
 
   # TODO(all): Combine "simulator" and "simulator_run".
   simulator_run = not options.dont_skip_simulator_slow_tests and \
       arch in ['arm64', 'arm', 'mips'] and ARCH_GUESS and arch != ARCH_GUESS
   # Find available test suites and read test cases from them.
   variables = {
     "arch": arch,
     "asan": options.asan,
     "deopt_fuzzer": False,
     "gc_stress": options.gc_stress,
@@ skipping 77 matching lines @@
   exit_code = runner.Run(options.j)
   overall_duration = time.time() - start_time
 
   if options.time:
     verbose.PrintTestDurations(suites, overall_duration)
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())