Fixing NameError: global name 'options' is not defined.

if chrome_options is not None:

...
py/selenium/webdriver/chrome/webdriver.py", line 55, in __init__
   desired_capabilities.update(options.to_capabilities())
NameError: global name 'options' is not defined

Regression was introduced in 6a7bb83

Author: sevaseva

py/selenium/webdriver/chrome/webdriver.py

@@ -50,9 +50,9 @@ def __init__(self, executable_path="chromedriver", port=0,
                 desired_capabilities = Options().to_capabilities()
         else:
             if desired_capabilities is None:
-                desired_capabilities = options.to_capabilities()
+                desired_capabilities = chrome_options.to_capabilities()
             else:
-                desired_capabilities.update(options.to_capabilities())
+                desired_capabilities.update(chrome_options.to_capabilities())
 
         self.service = Service(executable_path, port=port,
             service_args=service_args, log_path=service_log_path)