[chromedriver] Stop supporting chrome 26. Don't run tests against it.

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 135 matching lines @@
     code1 = RunPythonTests(chromedriver,
                            android_package=options.android_package)
     code2 = RunJavaTests(chromedriver_server,
                          android_package=options.android_package)
     return code1 or code2
   else:
     latest_snapshot_revision = archive.GetLatestRevision(archive.Site.SNAPSHOT)
     versions = [
         ['HEAD', latest_snapshot_revision],
         ['28', archive.CHROME_28_REVISION],
-        ['27', archive.CHROME_27_REVISION],
-        ['26', archive.CHROME_26_REVISION]
+        ['27', archive.CHROME_27_REVISION]
     ]
     code = 0
     for version in versions:
       if options.chrome_version and version[0] != options.chrome_version:
         continue
       download_site = archive.Site.CONTINUOUS
       version_name = version[0]
       if version_name == 'HEAD':
         version_name = version[1]
         download_site = archive.Site.SNAPSHOT
       chrome_path = archive.DownloadChrome(version[1],
                                            util.MakeTempDir(),
                                            download_site)
       code1 = RunPythonTests(chromedriver, chrome=chrome_path,
                              chrome_version=version[0],
                              chrome_version_name=version_name)
       code2 = RunJavaTests(chromedriver_server, chrome=chrome_path,
                            chrome_version=version[0],
                            chrome_version_name=version_name)
       code = code or code1 or code2
     cpp_tests = os.path.join(build_dir, cpp_tests_name)
     return RunCppTests(cpp_tests) or code
 
 
 if __name__ == '__main__':
   sys.exit(main())