Chromedriver

Since v0.6.0 chromedriver is distributed with node-webkit binaries.

From chromedriver project home page:

WebDriver is an open source tool for automated testing of webapps across many browsers. It provides capabilities for navigating to web pages, user input, JavaScript execution, and more. ChromeDriver is a standalone server which implements WebDriver's wire protocol for Chromium. It is being developed by members of the Chromium and WebDriver teams. 

You can use it with tools like selenium.

The only difference of the binary files from the official one is: chromedriver2_server will search for node-webkit binaries (nw, nw.exe) in the same directory (on OSX it's the same directory with node-webkit.app).

Downloads

https://s3.amazonaws.com/node-webkit/v0.6.0/chromedriver2-nw-v0.6.0-win-ia32.zip https://s3.amazonaws.com/node-webkit/v0.6.0/chromedriver2-nw-v0.6.0-linux-ia32.tar.gz https://s3.amazonaws.com/node-webkit/v0.6.0/chromedriver2-nw-v0.6.0-linux-x64.tar.gz https://s3.amazonaws.com/node-webkit/v0.6.0/chromedriver2-nw-v0.6.0-osx-ia32.zip