Make test runner more chatty to avoid it getting killed by buildbot.

tools/testrunner/local/execution.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 212 matching lines @@
       try:
         queue.append([self._GetJob(test)])
       except Exception, e:
         # If this failed, save the exception and re-raise it later (after
         # all other tests have had a chance to run).
         queued_exception = e
         continue
     try:
       it = pool.imap_unordered(RunTest, queue)
       for result in it:
-        test = test_map[result[0]]
+        if result.heartbeat:
+          self.indicator.Heartbeat()
+          continue
+        test = test_map[result.value[0]]
         if self.context.predictable:
-          update_perf = self._ProcessTestPredictable(test, result, pool)
+          update_perf = self._ProcessTestPredictable(test, result.value, pool)
         else:
-          update_perf = self._ProcessTestNormal(test, result, pool)
+          update_perf = self._ProcessTestNormal(test, result.value, pool)
         if update_perf:
           self._RunPerfSafe(lambda: self.perfdata.UpdatePerfData(test))
     finally:
       pool.terminate()
       self._RunPerfSafe(lambda: self.perf_data_manager.close())
       if self.perf_failures:
         # Nuke perf data in case of failures. This might not work on windows as
         # some files might still be open.
         print "Deleting perf test data due to db corruption."
         shutil.rmtree(self.datapath)
@@ skipping 17 matching lines @@
            test.suite.GetFlagsForTestCase(test, self.context) +
            self.context.extra_flags)
     return cmd
 
 
 class BreakNowException(Exception):
   def __init__(self, value):
     self.value = value
   def __str__(self):
     return repr(self.value)