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Today’s meeting leader is: johannh

General Topics / Roundtable

Friends of the Firefox team

(Give a shoutout/thanks to people for helping fix and test bugs. Introductions)

Project Updates


Activity Stream

  • Update on Activity Stream on about:home for 57
    • Landed patch to restore existing about:home in Nightly, preffed off by default
    • Starting a Shield pref flip study in Nightly to compare Activity Stream to existing about:home
    • Requested uplift for patch to 57 Beta so that same study can be run there
  • Started planning / landing for 58

Browser Architecture

  • XBL design review happened last week, next step is to share the plans more widely.
  • Experimenting with removing the XUL box model

Electrolysis (e10s)

  • No updates this week.

Firefox Core Engineering

Form Autofill

  • Working with the SHIELD team to do the gradual rollout of address autofill in 56
    • One bug fix needs deployment first
  • Continuing work on credit card autofill for the US (not riding the trains yet)
  • “Clear” autofill item in progress




  • Been doing a deep-dive investigation on this bug where a user reports slower page load times due to the 60fps tab throbber
    • We’ve now got hardware where we can reproduce the problem on. The clock speed is really low on these machines (even worse when in battery-saving mode), which seems to be the main contributing factor.
  • Fixed a bug where logins / passwords weren’t being filled in via the context menu item - this was a regression from some perf work where the contextmenu sync IPC message was removed.
  • Patches will land shortly that will allow us to kill hanging JS more quickly in content processes when we’re shutting down or when all windows have disappeared. This should eliminate a class of slow shutdowns.





  • No updates this week.


  • No updates this week.

Platform Audibles


  • No updates this week.

Search and Navigation

Sync / Firefox Accounts

  • No updates this week.

Test Pilot

Web Payments

  • Had our first front-end team meeting
  • Handing over UX from Juwei to jsavory and met to discuss some concerns with the previous design

This week I learned