[meta] be able to symbolicate profiles after capturing

[julienw]

The goal of this meta issue is to better define which tasks are needed to be able to symbolicate profiles after capturing and sharing. The goal is especially to be able to symbolicate profiles on a different computer.

Obviously this will be only possible for official builds.

• [x] Capture and display Firefox build ID in profiler UI #603
• [x] Symbolicate unsymbolicated profiles after loading them, if possible
• [ ] Allow sharing a non-symbolicated profile
• [ ] Allow capturing and sharing from the add-on directly -- this involves processing the profile as well

Anything missing ?

┆Issue is synchronized with this Jira Task

[fqueze]

Greg has just done some related work in PR #2448, is this enough to close this?

[julienw]

We can file individual bugs for the rest of the tasks I outlined above. I think the 3rd task may be done, but the 4th isn't and I still think this could be useful. Using our new mechanism this may be doable with a simple page hosted inside Firefox that could fetch the profile using the same API we use in the full UI, and publish that data.