Google Offline Conversion Tracking
Google AdWords allows for an integration with Salesforce which "allows you to automatically see when sales events that you track in Salesforce started with a click on an AdWords ad. It's the best option if you use Salesforce’s Sales Cloud® to track your sales data."
Is it possible to have a similar integration for HubSpot where conversions are imported into your Google AdWords account directly from HubSpot?
More details about Offline Conversion Tracking by Google: https://support.google.com/adwords/answer/2998031?hl=en