Created: April 28, 2021
Overview
Our Braintree Gateway now supports the use GooglePay on the checkout page. In order to set up a campaign to accept GooglePay, you must be sure the proper payment type is selected at the campaign level.
Please Note: There is front-end development work that must be done on the checkout page to implement GooglePay correctly.
More information around front-end implementation can be found here:
Overview: https://developers.braintreepayments.com/guides/google-pay/overview
Drop-In SDK: https://developers.braintreepayments.com/guides/drop-in/overview/javascript/v3
Adding GooglePay as Payment Type to a Campaign
Go to the campaign you wish to add GooglePay as a payment type
Under Payment Type, select GooglePay
Upon selecting GooglePay, a Gateway Configuration window will appear below Payment Type.
The only gateways that will appear on that list will be Braintree gateways, please select the appropriate gateway/MID for that campaign.

Creating GooglePay orders via API:
Within the NewOrder request to sticky you will need to make sure to include the 'creditCardType' as 'googlepay', and also include the 'braintree_nonce'.