05c6519eb9
Fixes issues when using the display arrangement utility. The region outside of the screens had random data when re-arranging displays while capturing. This CL makes sure this region is always black. Bug: webrtc:9703 Change-Id: I1481dd0f1b4584e75926755f9b8a6e5161cd5904 Reviewed-on: https://webrtc-review.googlesource.com/97184 Commit-Queue: Brave Yao <braveyao@webrtc.org> Reviewed-by: Brave Yao <braveyao@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24589}