This enables clients of EglBase to keep using it but
share underlying EGLContext with other clients.
go/meet-android-eglcontext-reduction
Bug: b/225229697
Change-Id: I42719f25be7db169c39878b57a5f1487e3c1894e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/301941
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Commit-Queue: Linus Nilsson <lnilsson@webrtc.org>
Reviewed-by: Xavier Lepaul <xalep@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39961}