Bug 293469 – Web Inspector: REGRESSION(?): Timelines: Call Trees of Page target sometimes aren't shown

• Component: Web Inspector
• Status: RESOLVED FIXED

[Devin Rousso]

# STEPS TO REPRODUCE
1. inspect any page with a `Worker` (e.g. <https://devinrousso.com/demo/WebKit/263334/test.html>)
2. select the JavaScript & Events timeline and then show the Call Trees view
3. start a timeline recording
4. trigger JS activity in the page and `Worker` (e.g. click a bunch of times on the page)
5. stop the timeline recording
6. clear/reset the timeline recording
7. start a second timeline recording
8. trigger JS activity in the page and `Worker` (e.g. click a bunch of times on the page)
9. stop the timeline recording

## EXPECTED
there is content in the Call Trees view for the Page target

## ACTUAL
no content

# NOTES
verify whether any JS activity was captured for the Page by looking to see if any of the items in the Events view show JS stack traces and whatnot

[Devin Rousso]

Pull request: https://github.com/WebKit/WebKit/pull/45812

[Radar WebKit Bug Importer]

<rdar://problem/151937432>

[EWS]

Committed 295373@main (404b97e5c772): <https://commits.webkit.org/295373@main>

Reviewed commits have been landed. Closing PR #45812 and removing active labels.