Merge "CCodecBufferChannel: throttle by # of frames in pipeline" into main am:...

Merge "CCodecBufferChannel: throttle by # of frames in pipeline" into main am: 7182832e am: 80c2e94f

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3205741



Change-Id: Ic34dd5729925cf235b1affa8b47f5deeef9e34b5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>