chrome driver下载地址：
https://npm.taobao.org/mirrors/chromedriver
driver与chrome的对应关系：
进入最新的driver，查看notes.txt文件，即可获取到对应关系
curl https://npm.taobao.org/mirrors/chromedriver/2.40/notes.txt grep -e "ChromeDriver v" -e "chrome v" |grep -v "Resolved" > chrome.txt
ChromeDriver v2.40 (2018-06-07) Supports Chrome v66-68
ChromeDriver v2.39 (2018-05-30) Supports Chrome v66-68
ChromeDriver v2.38 (2018-04-17) Supports Chrome v65-67
ChromeDriver v2.37 (2018-03-16) Supports Chrome v64-66
ChromeDriver v2.36 (2018-03-02) Supports Chrome v63-65
ChromeDriver v2.35 (2018-01-10) Supports Chrome v62-64
ChromeDriver v2.34 (2017-12-10) Supports Chrome v61-63
ChromeDriver v2.33 (2017-10-03) Supports Chrome v60-62
ChromeDriver v2.32 (2017-08-30) Supports Chrome v59-61
ChromeDriver v2.31 (2017-07-21) Supports Chrome v58-60
ChromeDriver v2.30 (2017-06-07) Supports Chrome v58-60
ChromeDriver v2.29 (2017-04-04) Supports Chrome v56-58
ChromeDriver v2.28 (2017-03-09) Supports Chrome v55-57
ChromeDriver v2.27 (2016-12-23) Supports Chrome v54-56
ChromeDriver v2.26 (2016-12-09) Supports Chrome v53-55
ChromeDriver v2.25 (2016-10-25) Supports Chrome v53-55
ChromeDriver v2.24 (2016-09-09) Supports Chrome v52-54
ChromeDriver v2.23 (2016-08-04) Supports Chrome v51-53
ChromeDriver v2.22 (2016-06-06) Supports Chrome v49-52
ChromeDriver v2.21 (2016-01-28) Supports Chrome v46-50
ChromeDriver v2.20 (2015-10-08) Supports Chrome v43-48
ChromeDriver v2.19 (2015-08-28) Supports Chrome v43-47
ChromeDriver v2.18 (2015-08-19) Supports Chrome v43-46