There is a AV where GDI capturer sends empty frame to the blank detector. It is fine operation from the GDI capturer to pass an empty to the next handler. So, blank capturer filter it and send it as blank frame to next handler. Bug: webrtc:14265 Change-Id: Ifc90a210703e14fa6d0dc7fb2ae2942ae4e8125f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/268444 Reviewed-by: Alexander Cooper <alcooper@chromium.org> Commit-Queue: Alexander Cooper <alcooper@chromium.org> Cr-Commit-Position: refs/heads/main@{#37513}