This patch adds send_ping_on_selected_ice_controlling that is
the same like send_ping_on_switch_ice_controlling except that it
also sends the ping on initial selection (i.e not a switch(?)).
I.e it sends "extra" pings when selecting a connection.
This lets the peer know that this candidate pair has been selected,
which causes some peers to unblock sending on the candidate pair.
TODO deprecate send_ping_on_switch_ice_controlling in favor of this,
i.e I should have done it like this on first attempt :(
Bug: webrtc:10273
Change-Id: I0e02cd5fd6d677720c1fa863af5d7c2334d02d4f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/182780
Commit-Queue: Jonas Oreland <jonaso@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32006}