philipel 112adf9ca9 Validate references of frames inserted into FrameBuffer2.
BUG=chromium:730603

Review-Url: https://codereview.webrtc.org/2937243002
Cr-Commit-Position: refs/heads/master@{#18614}
2017-06-15 16:06:21 +00:00
..
2016-11-16 19:11:38 +00:00