Google Chrome by default uses your operating system's default setting to connect to the network and the Internet. You can route your Internet traffic via a proxy by configuring your system's proxy setting via
Chrome's setting page.
Change proxy setting in Google Chrome:
The caveat to this approach is that it will configure the system's proxy setting whereby all the other traffic for your systems will through the configured proxy. To route only your browser's traffic through a proxy, it is advisable to use proxy extensions such as FoxyProxy