Add dartium buildbot step to clear temp directory on Windows

tools/dartium/buildbot_annotated_steps.py

 #!/usr/bin/python
 
 # Copyright (c) 2014 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.
 
 """Dartium buildbot steps
 
 Archive dartium, content_shell, and chromedriver to the cloud storage bucket
 gs://dart-archive, and run tests, including the Dart layout tests.
@@ skipping 35 matching lines @@
   cmd.append('--no-show-results')
 
   if test_filter:
     cmd.append('--test-filter=' + test_filter)
 
   status = subprocess.call(cmd)
   if status != 0:
     print '@@@STEP_FAILURE@@@'
   return status
 
+def ClearTemp():
+  if platform.system() == 'Windows':
+    shutil.rmtree('C:\\Users\\chrome-bot\\AppData\\Local\\Temp',
+                  ignore_errors=True)
 
 def Test(info, component, suite, checked, test_filter=None):
   """Test a particular component (e.g., dartium or content_shell(drt)).
   """
   print '@@@BUILD_STEP %s_%s_%s_tests@@@' % (component, suite, checked)
   sys.stdout.flush()
   layout_test_results_dir = os.path.join(SRC_PATH, 'webkit', info.mode,
                                          'layout-test-results')
   shutil.rmtree(layout_test_results_dir, ignore_errors=True)
   status = RunDartTests(info.mode, component, suite, info.arch, checked,
                         test_filter=test_filter)
     # Archive test failures
   if suite == 'layout' and status != 0:
     upload_steps.UploadDartTestsResults(layout_test_results_dir,
                                         info.name,
                                         info.version,
                                         component, checked)
+  ClearTemp()
   return status
 
 
 def main():
   # We need to chdir() to src/dart in order to get the correct revision number.
   with utils.ChangedWorkingDirectory(DART_PATH):
     dart_tools_utils = imp.load_source('dart_tools_utils',
                                        os.path.join('tools', 'utils.py'))
     dart_revision = dart_tools_utils.GetArchiveVersion()
 
   version = '%s.0' % dart_revision
   info = upload_steps.BuildInfo(dart_revision, version)
 
   result = 0
 
   # Archive to the revision bucket unless integration build
   if info.channel != 'integration':
     result = upload_steps.ArchiveAndUpload(info, archive_latest=False)
     # On dev/stable we archive to the latest bucket as well
     if info.channel != 'be':
       result = (upload_steps.ArchiveAndUpload(info, archive_latest=True)
                 or result)
 
   # Run layout tests
   if info.mode == 'Release' or platform.system() != 'Darwin':
     result = Test(info, 'drt', 'layout', 'unchecked') or result
     result = Test(info, 'drt', 'layout', 'checked') or result
-
   # Run dartium tests
   result = Test(info, 'dartium', 'core', 'unchecked') or result
   result = Test(info, 'dartium', 'core', 'checked') or result
-
+  
   # Run ContentShell tests
   # NOTE: We don't run ContentShell tests on dartium-*-inc builders to keep
   # cycle times down.
   if not info.is_incremental:
     # If we run all checked tests on dartium, we restrict the number of
     # unchecked tests on drt to DRT_FILTER
     result = Test(info, 'drt', 'core', 'unchecked',
                   test_filter=DRT_FILTER) or result
     result = Test(info, 'drt', 'core', 'checked') or result
 
   # On the 'be' channel, we only archive to the latest bucket if all tests were
   # successful.
   if result == 0 and info.channel == 'be':
     result = upload_steps.ArchiveAndUpload(info, archive_latest=True) or result
   return result
 
 if __name__ == '__main__':
   sys.exit(main())