Allow collapsing "recursion" of a method across different classes (different overrides when recursing on a virtual method)

[mstange]

Profile: https://share.firefox.dev/4aV5m8p

In the profile above, I would like to get a percentage breakdown of the time spent in each XYZFrame::Reflow() implementation.
Ideally, I would like to "collapse recursion" on the Reflow method, even though this method is implemented on a bunch of different classes.

This pattern of having a virtual function that you call through a tree is probably not uncommon.

┆Issue is synchronized with this Jira Task

[dirxforce]

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