Sameer Vijaykar 794e68cf3d Refactor IceControllerEvent
This change is the first step in decoupling IceControllerEvent from the
ICE switch reason. Further cleanup is earmarked, and will be landed
after some internal cleanup.

This change
- adds a new enum - IceSwitchReason
- adds a member for the new enum in IceControllerEvent
- uses the new enum within P2PTransportChannel
- adds methods to IceControllerInterface accepting the new enum
- deprecates usages of the old enum in IceControllerInterface
- adds conversion between the old and new enums for compatibility

Bug: webrtc:14125, webrtc:14131
Change-Id: I5b7201c3f631eb40db334dfeec842841a7e58174
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/264140
Reviewed-by: Jonas Oreland <jonaso@webrtc.org>
Commit-Queue: Sameer Vijaykar <samvi@google.com>
Cr-Commit-Position: refs/heads/main@{#37051}
2022-05-31 07:32:54 +00:00
..
2022-05-31 07:32:54 +00:00
2022-05-31 07:32:54 +00:00
2021-08-31 14:27:49 +00:00