[test] Return variant and random seed on failures.

tools/testrunner/local/progress.py

 # 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
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 295 matching lines @@
       if test.output.HasTimedOut():
         fail_text += "--- TIMEOUT ---"
     self.outputter.HasRunTest(
         [test.GetLabel()] + self.runner.context.mode_flags + test.flags,
         test.duration,
         fail_text)
 
 
 class JsonTestProgressIndicator(ProgressIndicator):
 
-  def __init__(self, json_test_results, arch, mode):
+  def __init__(self, json_test_results, arch, mode, random_seed):
     self.json_test_results = json_test_results
     self.arch = arch
     self.mode = mode
+    self.random_seed = random_seed
     self.results = []
     self.tests = []
 
   def Done(self):
     complete_results = []
     if os.path.exists(self.json_test_results):
       with open(self.json_test_results, "r") as f:
         # Buildbot might start out with an empty file.
         complete_results = json.loads(f.read() or "[]")
 
@@ skipping 33 matching lines @@
       "flags": test.flags,
       "command": EscapeCommand(self.runner.GetCommand(test)).replace(
           ABS_PATH_PREFIX, ""),
       "run": test.run,
       "stdout": test.output.stdout,
       "stderr": test.output.stderr,
       "exit_code": test.output.exit_code,
       "result": test.suite.GetOutcome(test),
       "expected": list(test.outcomes or ["PASS"]),
       "duration": test.duration,
+
+      # TODO(machenbach): This stores only the global random seed from the
+      # context and not possible overrides when using random-seed stress.
+      "random_seed": self.random_seed,
+      "variant": test.variant,
     })
 
 
 PROGRESS_INDICATORS = {
   'verbose': VerboseProgressIndicator,
   'dots': DotsProgressIndicator,
   'color': ColorProgressIndicator,
   'mono': MonochromeProgressIndicator
 }