Your need in one sentence
Open hangouts images inside (related to) station rather than opened with the default browser
GIVE US CONTEXT
Tell us about the current experience
Tell us what you are looking to change
When I click on an image inside a hangouts chat, it is displayed using an external browser window. It should be better if opened inside a Station popup window.
DESCRIBE THE IMPACT
How would it change your experience
The popup window will be related to the Station app.