Rename incognito and simple_smoke to be better named and organized.

tools/chrome_proxy/webdriver/smoke.py

 # Copyright 2017 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 common
 from common import TestDriver
 from common import IntegrationTest
 
 
 class Incognito(IntegrationTest):
 
   # Ensure Chrome does not use DataSaver in Incognito mode.
   def testCheckPageWithIncognito(self):
     with TestDriver() as t:
       t.AddChromeArg('--enable-spdy-proxy-auth')
       t.AddChromeArg('--incognito')
       t.LoadURL('http://check.googlezip.net/test.html')
       for response in t.GetHTTPResponses():
         self.assertNotHasChromeProxyViaHeader(response)
 
 if __name__ == '__main__':
   IntegrationTest.RunAllTests()