Chrome profiles are shown with 1/1/1970 datestamp (prominently in tab title)

[dholbert]

STR:

1. Record a profile in Google Chrome.
2. Export that profile to a JSON file (using the downarrow icon near the top-left of Chrome's profiler UI)
3. Visit https://profiler.firefox.com/ and upload the Chrome profile there.
4. Look at the title of the resulting page (as shown on your tab-title, for example)

ACTUAL RESULTS: Title is "Chrome Trace - 1/1/1970"

EXPECTED RESULTS: Clearly the date was not present or not found, so it should be omitted or replaced with "Unknown date" or something like that.

Here's a profile that I just captured and uploaded, as an example: https://share.firefox.dev/3rePWHa

And here's a screenshot of the page title as shown in my tab-strip:

┆Issue is synchronized with this Jira Task

[julienw]

I don't think we have the information in the profile, but I guess we could use Date.now() as a good approximation when converting the profile.

[julienw]

In this area: https://github.com/firefox-devtools/profiler/blob/4f0c5af6c42365a2296620572e30c886de34be74/src/profile-logic/import/chrome.js#L468-L470 we could set startTime in the meta object.

[julienw]

Could be fixed by https://github.com/firefox-devtools/profiler/pull/4797

[kazarmy]

It could if one was willing to put (manually or automatically) the timestamp for time 0 inside the profile filename

[canova]

This is fixed by #5188.