[chromedriver] Run tests against 27.

chrome/test/chromedriver/run_all_tests.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Runs all ChromeDriver end to end tests."""
 
 import optparse
 import os
 import sys
@@ skipping 78 matching lines @@
   if code:
     print '@@@STEP_FAILURE@@@'
   return code
 
 
 def main():
   parser = optparse.OptionParser()
   parser.add_option(
       '', '--android-package',
       help='Application package name, if running tests on Android.')
+  # Option 'chrome-version' is for desktop only.
+  parser.add_option(
+      '', '--chrome-version',
+      help='Version of chrome, e.g., \'HEAD\', \'27\', or \'26\'.'
+           'Default is to run tests against all of these versions.'
+           'Notice: this option only applies to desktop.')
   options, _ = parser.parse_args()
 
   chromedriver_map = {
       'win': 'chromedriver2.dll',
       'mac': 'chromedriver2.so',
       'linux': 'libchromedriver2.so',
   }
   chromedriver_name = chromedriver_map[util.GetPlatformName()]
 
   chrome_map = {
@@ skipping 33 matching lines @@
                            android_package=options.android_package)
     code2 = RunJavaTests(chromedriver_server,
                          android_package=options.android_package)
     return code1 or code2
   else:
     chrome_tip_of_tree = os.path.join(build_dir, chrome_name)
     cpp_tests = os.path.join(build_dir, cpp_tests_name)
 
     chrome_26 = continuous_archive.DownloadChrome(
         continuous_archive.CHROME_26_REVISION, util.MakeTempDir())
+    chrome_27 = continuous_archive.DownloadChrome(
+        continuous_archive.CHROME_27_REVISION, util.MakeTempDir())
     chrome_path_versions = [
         {'path': chrome_tip_of_tree, 'version': 'HEAD'},
+        {'path': chrome_27, 'version': '27'},
         {'path': chrome_26, 'version': '26'},
     ]
     code = 0
     for chrome in chrome_path_versions:
+      if options.chrome_version and chrome['version'] != options.chrome_version:
+        continue
+
       code1 = RunPythonTests(chromedriver, chrome=chrome['path'],
                              chrome_version=chrome['version'])
       code2 = RunJavaTests(chromedriver_server, chrome=chrome['path'],
                            chrome_version=chrome['version'])
       code = code or code1 or code2
     return RunCppTests(cpp_tests) or code
 
 
 if __name__ == '__main__':
   sys.exit(main())