1251006 - Telemetry to capture devicePixelRatio values

Status: NEW

(DevTools :: Responsive Design Mode, defect, P3)

Description

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

It would be interesting to capture several data points in telemetry:

* What is the default devicePixelRatio?
* What non-default values are chosen in RDM?

Comment 1

[Bryan Clark (DevTools PM) [:clarkbw]]

Here's the user story as I understand it coming from bug 758011 comment 27.

As a product designer I would like to know what the pixel ratio is for the systems running Firefox such that I could create better laptop device templates. (this may already be gathered by telemetry in some way)

As a product designer I would like to know what the chosen pixel ratio values are such that we could best tune the default values according to what users are choosing.

And last, this one isn't covered by this bug but I feel like it should be included.
As a product designer I would like to know what other pixel ratios users need beyond the set given such that we can show the best interface for working with pixel ratios needed.