Computer Configuration > Administrative Templates > Google Chrome
Both
HKLM\Software\Policies\Google\Chrome
Setting the policy to Enabled or leaving it unset turns on WPAD (Web Proxy Auto-Discovery) optimization in Google Chrome. Setting the policy to Disabled turns off WPAD optimization, causing Google Chrome to wait longer for DNS-based WPAD servers. Whether or not this policy is set, users can't change the WPAD optimization setting.