Disjoint subsets of the enum values are used for Ice candidate config
events and Ice candidate check events. This CL breaks out the config
part to a separate enum and by extension changes the icelogger interface
for config events.
Bug: webrtc:9336, webrtc:8111
Change-Id: I405b5c3981905c3c504b45afdddb3649469ed141
Reviewed-on: https://webrtc-review.googlesource.com/79943
Reviewed-by: Qingsi Wang <qingsi@webrtc.org>
Commit-Queue: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23464}