Fix runisolatedtest.py to support 1.x .isolated files.

scripts/slave/runisolatedtest.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.
 
 """A tool to run a chrome test executable directly, or in isolated mode."""
 
 import json
 import logging
 import optparse
@@ skipping 86 matching lines @@
   isn't generally true, so rewrite the paths in the isolated file. See
   http://crbug.com/311622 for details. This can go away once all bots using
   isolates are using ninja.
   """
   # See the isolates file format description at:
   # https://code.google.com/p/swarming/wiki/IsolatedDesign#.isolated_file_format
   with open(isolated_file) as f:
     isolated_data = json.load(f)
 
   # 1. check version
-  if isolated_data['version'] != '1.0':
+  if isolated_data['version'].split('.', 1)[0] != '1':
     logging.error('Unexpected isolate version %s', isolated_data['version'])
     return 1
 
   # 2. fix command, print it
   for i in range(len(isolated_data['command'])):
     arg = isolated_data['command'][i]
     isolated_data['command'][i] = sanitize_build_dir(arg, build_dir_basename)
 
   # 3. fix files
   sanitized_files = {}
@@ skipping 106 matching lines @@
       isolate_script = os.path.join(options.checkout_dir, 'src', 'tools',
                                     'swarm_client', 'isolate.py')
     return run_test_isolated(isolate_script, test_exe, original_command)
   else:
     logging.info('Running test normally')
     return run_command(original_command)
 
 
 if '__main__' == __name__:
   sys.exit(main(None))