Add abstract decoder support in LibWebRTCCodecsProxy
*** Bug 248758 has been marked as a duplicate of this bug. ***
<rdar://problem/102976377>
Pull request: https://github.com/WebKit/WebKit/pull/7145
Pull request: https://github.com/WebKit/WebKit/pull/7149
Committed 257463@main (0a22679f00e8): <https://commits.webkit.org/257463@main> Reviewed commits have been landed. Closing PR #7149 and removing active labels.
Reverted by https://github.com/WebKit/WebKit/pull/7271
Committed 257493@main (e9b7bb98aeae): <https://commits.webkit.org/257493@main> Reviewed commits have been landed. Closing PR #7271 and removing active labels.
Re-opening for pull request https://github.com/WebKit/WebKit/pull/7318
Committed 257582@main (18c55a96d72a): <https://commits.webkit.org/257582@main> Reviewed commits have been landed. Closing PR #7318 and removing active labels.