Add information about rerun tests to json output.

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 300 matching lines @@
     })
 
     with open(self.json_test_results, "w") as f:
       f.write(json.dumps(complete_results))
 
   def AboutToRun(self, test):
     self.progress_indicator.AboutToRun(test)
 
   def HasRun(self, test, has_unexpected_output):
     self.progress_indicator.HasRun(test, has_unexpected_output)
-    if not has_unexpected_output:
+    if test.run == 1 and not has_unexpected_output:
+      # Omit tests that pass on the first run, but collect output of tests
+      # that pass when rerun.
       return
     self.results.append({
       "name": test.GetLabel(),
       "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": "CRASH" if test.output.HasCrashed() else "FAIL",
     })
 
 
 PROGRESS_INDICATORS = {
   'verbose': VerboseProgressIndicator,
   'dots': DotsProgressIndicator,
   'color': ColorProgressIndicator,
   'mono': MonochromeProgressIndicator
 }