1899538 - The "SET_DEFAULT_PDF_HANDLER" action is not supported by the featureCallout template

Status: NEW

(Firefox :: Messaging System, defect, P3)

Description

[Carmen Fat [:cfat] - Ecosystem QA]

[Affected versions]:

• Firefox Release 126.0.1 (Build ID: 20240526221752)
• Firefox Beta 127.0b7 (Build ID: 20240527091822)
• Firefox Nightly 128.0a1 (Build ID: 20240529013712)

[Affected Platforms]:

• Windows 10

[Prerequisites]:

• Have Firefox installed.
• Have a non-Firefox app set as default for .pdf files. (e.g. Adobe Acrobat)
• Have following pref set:
  browser.newtabpage.activity-stream.asrouter.devtoolsEnabled = true

[Steps to reproduce]:

1. Open the browser using the profile from the prerequisites.
2. Navigate to about:asrouter.
3. Delete the content of any message and paste the JSON config for "SET_DEFAULT_PDF_HANDLER" featureCallout from here.
4. Click the "Modify" button.
5. Click the "Primary button" of the message.
6. Open the Default apps OS window and observe the default app for .pdf files.

[Expected result]:

• Firefox is set as the default app for .pdf files.

[Actual result]:

• Firefox is NOT set as the default app for .pdf files.

[Notes]:

• This is reproducible when using featureCallout and infobar messages with the "SET_DEFAULT_PDF_HANDLER" action.
• The following error is displayed in the Browser Console after clicking the primary button:
  Error: WDBA nonzero exit code 2147500037: ErrExeOther

Comment 1

[Meg Viar [:mviar]]

Not currently blocking any experiments but this is an action we want to support.