I'm not convinced that it's so easy for developers to change this. Can we do some outreach to see who might be impacted?
On Tuesday, October 13, 2026 at 3:02:01 AM UTC-7 Noam Rosenthal wrote: > > > On Mon, Oct 12, 2026, 7:43 PM Alex Russell <[email protected]> > wrote: > >> Do I understand correctly that this is going to reduce the scope of >> existing metrics information via TAO? > > > Correct. > >> Do we have reason not to think of this as a breaking change and/or some >> metrics that would cabin the risk somehow? > > > It's a change that reduces the availability of some metrics in certain > situations. > > However, developers that care enough about these metrics can add > crossorigin HTML attributes and cross-origin CSS modifiers (which were > added, in part, to mitigate this), and get them back. > > The security/performance trade offs were carefully examined when we > specified and discussed this back in 2022. We just never shipped it... > > See discussion in https://GitHub.com/resource-timing/issues/220, which > was also discussed in WebPerfWG. > >> >> Best, >> >> Alex >> >> On Monday, October 12, 2026 at 11:16:05 AM UTC-7 [email protected] >> wrote: >> >>> LGTM2 >>> >>> On Wednesday, October 7, 2026 at 10:01:42 AM UTC-7 [email protected] >>> wrote: >>> >>>> Great, >>>> >>>> LGTM1 >>>> >>>> Thanks, >>>> Vlad >>>> >>>> On Wed, Oct 7, 2026 at 1:00 PM Noam Rosenthal <[email protected]> >>>> wrote: >>>> >>> On Wed, Oct 7, 2026 at 5:57 PM Vladimir Levin <[email protected]> >>>>> wrote: >>>>> > >>>>> > Hey, >>>>> > >>>>> > Thanks! The relevant tests seem to be failing in Blink on wpt.fyi. >>>>> Can you clarify if the idea is that you will fix them by >>>>> implementing/shipping this change? >>>>> >>>>> Confirmed, this is currently implemented in blink behind "test" rather >>>>> than "experimental", so flipping the switch would make them green. >>>>> >>>> -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/e25b1352-e81e-4063-8182-d792d89d4f77n%40chromium.org.
