Drop frames until first IDR in VTVDA.
This allows us to decode streams that incorrectly mark every frame
as a keyframe; we will drop frames until the first IDR and configure the
decoder then.
When this happens we log an error; it will show up in chrome://gpu (and
stderr).
This does mean that we are delaying decode failure (possibly indefinitely)
in that case.
BUG=229412,583638,583698,516039
Review URL: https://codereview.chromium.org/1679503002
Cr-Commit-Position: refs/heads/master@{#373964}
2 files changed
