There is no convenient way to get a handle on the frame clock, otherwise, and the frame clock object is where we show the frame rate...
2b773e0 inspector: Show the frame clock in misc
gtk/inspector/misc-info.c | 42 +++++++++++++++++++++++++++++++++++++++
gtk/inspector/misc-info.ui | 47 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 89 insertions(+)
Upstream: git.gnome.org