[chromedriver] Allow the Offline test

chrome/test/chromedriver/client/chromedriver.py

 # Copyright 2013 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.
 
 import command_executor
 from command_executor import Command
 from webelement import WebElement
 
 
 class ChromeDriverException(Exception):
@@ skipping 341 matching lines @@
   def GetAvailableLogTypes(self):
     return self.ExecuteCommand(Command.GET_AVAILABLE_LOG_TYPES)
 
   def IsAutoReporting(self):
     return self.ExecuteCommand(Command.IS_AUTO_REPORTING)
 
   def SetAutoReporting(self, enabled):
     self.ExecuteCommand(Command.SET_AUTO_REPORTING, {'enabled': enabled})
 
   def SetNetworkConditions(self, latency, download_throughput,
-                           upload_throughput):
+                           upload_throughput, offline=False):
     # Until http://crbug.com/456324 is resolved, we'll always set 'offline' to
     # False, as going "offline" will sever Chromedriver's connection to Chrome.
     params = {
         'network_conditions': {
-            'offline': False,
+            'offline': offline,
             'latency': latency,
             'download_throughput': download_throughput,
             'upload_throughput': upload_throughput
         }
     }
     self.ExecuteCommand(Command.SET_NETWORK_CONDITIONS, params)
 
   def SetNetworkConditionsName(self, network_name):
     self.ExecuteCommand(
         Command.SET_NETWORK_CONDITIONS, {'network_name': network_name})
 
   def GetNetworkConditions(self):
     conditions = self.ExecuteCommand(Command.GET_NETWORK_CONDITIONS)
     return {
         'latency': conditions['latency'],
         'download_throughput': conditions['download_throughput'],
         'upload_throughput': conditions['upload_throughput'],
         'offline': conditions['offline']
     }
 
   def DeleteNetworkConditions(self):
     self.ExecuteCommand(Command.DELETE_NETWORK_CONDITIONS)