[pyauto] GetBrowserInfo() should be usable at chromeos login screen

chrome/test/pyautolib/pyauto.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.
 
 """PyAuto: Python Interface to Chromium's Automation Proxy.
 
 PyAuto uses swig to expose Automation Proxy interfaces to Python.
 For complete documentation on the functionality available,
@@ skipping 1295 matching lines @@
                         u'width': 925,
                         u'x': 26,
                         u'y': 44}]}
 
     Raises:
       pyauto_errors.JSONInterfaceError if the automation call returns an error.
     """
     cmd_dict = {  # Prepare command for the json interface
       'command': 'GetBrowserInfo',
     }
-    return self._GetResultFromJSONRequest(cmd_dict)
+    return self._GetResultFromJSONRequest(cmd_dict, windex=-1)
 
   def GetNavigationInfo(self, tab_index=0, windex=0):
     """Get info about the navigation state of a given tab.
 
     Args:
       tab_index: The tab index, default is 0.
       window_index: The window index, default is 0.
 
     Returns:
       a dictionary.
@@ skipping 2953 matching lines @@
     successful = result.wasSuccessful()
     if not successful:
       pyauto_tests_file = os.path.join(self.TestsDir(), self._tests_filename)
       print >>sys.stderr, 'Tests can be disabled by editing %s. ' \
                           'Ref: %s' % (pyauto_tests_file, _PYAUTO_DOC_URL)
     sys.exit(not successful)
 
 
 if __name__ == '__main__':
   Main()