* Deprecates constructors that use string based `type`
* Deprecates string based type functions in favor of enum based.
* Restrict possible values of Candidate::type. Ensure a valid value
is assigned at construction.
* Make Port constructors protected to limit their use to subclasses.
- The reason for this is to make sure that use of SharedSocket()
is controlled (it adds a bit of complexity).
* Simplify construction of Port (remove Construct() etc)
Bug: webrtc:15846
Change-Id: If24ed674e175642efa49da37fd2bc847dd14f613
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/339860
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41865}