Your Tableau Server admin can create custom extract schedules. The publisher of the workbook can then choose from the list of schedules that the Server Admin provides. If you don't want to use an extract, you can select live, which would update as information is fed to the data source.
Hey Ben Bird,
Based on your use case, you may find success by appending the ?:refresh=yes parameter to your dashboard URL, i.e https://10ay.online.tableau.com/#/site/SITENAME/views/WORKBOOKNAME/Sheet1?:refresh=yes
This URL parameter will not force a refresh of your published data source, but instead, re-query the underlying data source for new information. I feel that using this, along with your Chrome extensions, will help out.