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

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 48 matching lines @@
 
   def Done(self):
     pass
 
   def AboutToRun(self, test):
     pass
 
   def HasRun(self, test, has_unexpected_output):
     pass
 
+  def Heartbeat(self):
+    pass
+
   def PrintFailureHeader(self, test):
     if test.suite.IsNegativeTest(test):
       negative_marker = '[negative] '
     else:
       negative_marker = ''
     print "=== %(label)s %(negative)s===" % {
       'label': test.GetLabel(),
       'negative': negative_marker
     }
 
@@ skipping 42 matching lines @@
   def HasRun(self, test, has_unexpected_output):
     if has_unexpected_output:
       if test.output.HasCrashed():
         outcome = 'CRASH'
       else:
         outcome = 'FAIL'
     else:
       outcome = 'pass'
     print 'Done running %s: %s' % (test.GetLabel(), outcome)
 
+  def Heartbeat(self):
+    print 'Still working...'
+    sys.stdout.flush()
+
 
 class DotsProgressIndicator(SimpleProgressIndicator):
 
   def HasRun(self, test, has_unexpected_output):
     total = self.runner.succeeded + len(self.runner.failed)
     if (total > 1) and (total % 50 == 1):
       sys.stdout.write('\n')
     if has_unexpected_output:
       if test.output.HasCrashed():
         sys.stdout.write('C')
@@ skipping 195 matching lines @@
       "expected": list(test.outcomes or ["PASS"]),
     })
 
 
 PROGRESS_INDICATORS = {
   'verbose': VerboseProgressIndicator,
   'dots': DotsProgressIndicator,
   'color': ColorProgressIndicator,
   'mono': MonochromeProgressIndicator
 }