chromedriver kill fix

Fixes https://github.com/appium/appium/issues/3484 (also requires https://github.com/appium/appium/commit/921077a39d16b83a72dc12f6493a2cc155f98b6e)

@jlipps can you check looks like the both ChromeDriver kill methods were broken, and didLaunch wasn't set for Chrome case triggering errors down the line.


What the OS is Windows?  Does that work without issue?