Record timing info for event handling.

[noamr]

This feeds into "Long Animation Frame" timing.

• At least two implementers are interested (and none opposed):
  • Chromium (implemented)
  • Gecko (Long Animation Frame mozilla/standards-positions#929)
• Tests are written and can be reviewed and commented upon at:
  • See https://wpt.fyi/results/long-animation-frame/tentative/l
• Implementation bugs are filed:
  • Chromium: already implemented
  • Gecko: https://bugzilla.mozilla.org/show_bug.cgi?id=1348405
  • WebKit: https://bugs.webkit.org/show_bug.cgi?id=270913
• MDN issue is filed: Long Animation Frames mdn/mdn#535
• The top of this comment includes a clear commit message to use.

(See WHATWG Working Mode: Changes for more details.)

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Preview | Diff

[annevk]

Why is it called "event handler" when you're in fact creating something for each listener? Event handlers and event listeners are distinct.

[noamr]

Why is it called "event handler" when you're in fact creating something for each listener? Event handlers and event listeners are distinct.

Good point, will rename this.

[noamr]

Why is it called "event handler" when you're in fact creating something for each listener? Event handlers and event listeners are distinct.

Good point, will rename this.

Renamed, though would need to wait for the refs to update before this builds successfully.

[annevk]

I wonder if this should happen after setting event's in passive listener flag. At least it seems the intent is that this happens close to actually calling the callback and where it is placed now it seems like it could easily move further away from that.

You'll have the duplicate global conditional, but seems acceptable?

[noamr]

I wonder if this should happen after setting event's in passive listener flag. At least it seems the intent is that this happens close to actually calling the callback and where it is placed now it seems like it could easily move further away from that.

You'll have the duplicate global conditional, but seems acceptable?

Yes, that's ok

[noamr]

I wonder if this should happen after setting event's in passive listener flag. At least it seems the intent is that this happens close to actually calling the callback and where it is placed now it seems like it could easily move further away from that.
You'll have the duplicate global conditional, but seems acceptable?

Yes, that's ok

Done