Address additional review comments for annotated steps in r10644

utils/compiler/buildbot.py

 #!/usr/bin/python
 
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Dart2js buildbot steps
 
 Runs tests for the  dart2js compiler.
 """
@@ skipping 287 matching lines @@
   Args:
      - mode: either 'debug' or 'release'
   """
   cmd = [sys.executable,
          './tools/clean_output_directory.py',
          '--mode=' + mode]
   print 'Clobbering %s' % (' '.join(cmd))
   return subprocess.call(cmd, env=NO_COLOR_ENV)
 
 def GetShouldClobber():
-  if os.environ.get(BUILDER_CLOBBER) == "1":
-    return True
-  else:
-    return False
+  return os.environ.get(BUILDER_CLOBBER) == "1"
 
 def main():
   if len(sys.argv) == 0:
     print 'Script pathname not known, giving up.'
     return 1
 
   (compiler, runtime, mode, system, option, shard_index, total_shards,
       is_buildbot) = GetBuildInfo()
   shard_description = ""
   if shard_index:
@@ skipping 28 matching lines @@
   if status == 0 and option != 'checked' and runtime == 'd8':
     status = TestCompiler(runtime, mode, system, option,
                           test_flags + ['--checked'], is_buildbot)
 
   if runtime != 'd8': CleanUpTemporaryFiles(system, runtime)
   if status != 0: print '@@@STEP_FAILURE@@@'
   return status
 
 if __name__ == '__main__':
   sys.exit(main())