[test] Switch off perf data feature on swarming.

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 295 matching lines @@
   result.add_option("--shell", help="DEPRECATED! use --shell-dir", default="")
   result.add_option("--shell-dir", help="Directory containing executables",
                     default="")
   result.add_option("--dont-skip-slow-simulator-tests",
                     help="Don't skip more slow tests when using a simulator.",
                     default=False, action="store_true",
                     dest="dont_skip_simulator_slow_tests")
   result.add_option("--stress-only",
                     help="Only run tests with --always-opt --stress-opt",
                     default=False, action="store_true")
+  result.add_option("--swarming",
+                    help="Indicates running test driver on swarming.",
+                    default=False, action="store_true")
   result.add_option("--time", help="Print timing information after running",
                     default=False, action="store_true")
   result.add_option("-t", "--timeout", help="Timeout in seconds",
                     default= -1, type="int")
   result.add_option("--tsan",
                     help="Regard test expectations for TSAN",
                     default=False, action="store_true")
   result.add_option("-v", "--verbose", help="Verbose output",
                     default=False, action="store_true")
   result.add_option("--valgrind", help="Run tests through valgrind",
@@ skipping 337 matching lines @@
                         mode_flags, verbose_output,
                         timeout, options.isolates,
                         options.command_prefix,
                         options.extra_flags,
                         options.no_i18n,
                         options.random_seed,
                         options.no_sorting,
                         options.rerun_failures_count,
                         options.rerun_failures_max,
                         options.predictable,
-                        options.no_harness)
+                        options.no_harness,
+                        use_perf_data=not options.swarming)
 
   # TODO(all): Combine "simulator" and "simulator_run".
   simulator_run = not options.dont_skip_simulator_slow_tests and \
       arch in ['arm64', 'arm', 'mipsel', 'mips', 'mips64', 'mips64el', \
                'ppc', 'ppc64'] and \
       ARCH_GUESS and arch != ARCH_GUESS
   # Find available test suites and read test cases from them.
   variables = {
     "arch": arch,
     "asan": options.asan,
@@ skipping 110 matching lines @@
   if exit_code == 1 and options.json_test_results:
     print("Force exit code 0 after failures. Json test results file generated "
           "with failure information.")
     exit_code = 0
 
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())