sergeyu 9fa7e4a0ac Fix error handling in X11 screen capturer
Previusly errors from XServerPixelBuffer::CaptureRect() were not always
handled, which results in a black frame returned from the capturer
instead of an error.

BUG=webrtc:7305

Review-Url: https://codereview.webrtc.org/2738513005
Cr-Commit-Position: refs/heads/master@{#17101}
2017-03-08 01:02:20 +00:00
..
2016-11-16 19:11:38 +00:00