Computer Configuration > Administrative Templates > Google Chrome
Both
HKLM\Software\Policies\Google\Chrome
This policy controls the availability of the shopping list feature. If enabled, users will be presented with UI to track the price of the product displayed on the current page. The tracked product will be shown in the bookmarks side panel. If this policy is set to Enabled or not set, the shopping list feature will be available to users. If this policy is set to Disabled, the shopping list feature will be unavailable.