tree 4b0a268a2f0a584ae6675758e1172c842fc26fff
parent dea3f53ebcda08f6255c904de56af5b35e30b4b7
author Aoyuan Zuo <zuoaoyuan@chromium.org> 1707767743 -0800
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1707769428 -0800

Event Timing - Handle modal dialog interference

* Previous undesired outcome: event timing could measure the arbitrarily
  long user input waiting time on synchronous javascript modal dialogs
  and report it as part of the presentation delay.
* Root cause: synchronous modal dialogs paused the event-damaged frame
  to be presented until after user close the dialog.
* This CL address it by: treating modal dialogs showing as another way
  of page responding and report the dialog showing timestamp as an
  alternative end time for duration measurement to any events that was
  interfered by the modal dialog in event timing.

Bug: 1435448
Change-Id: I8f48c0292e45b01ea51ac5134096a08f584fdcfb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5258894
Commit-Queue: Aoyuan Zuo <zuoaoyuan@chromium.org>
Reviewed-by: Michal Mocny <mmocny@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1259367}