There is an easy way to have Chrome open Breeze attachments instead of downloading them.
Open a record with an Attachments tab (for example, a Property record).
Click the Download button.
Breeze downloads the file as usual.
Go to the bottom-left corner of the browser window and click the arrow next to the name of the downloaded file.
Select Always open files of this type.
The next time you click the the Download button for the same file type, Chrome will open it, instead of downloading it.
It's that easy!