This changes callbacks to OnFrame methods to occur on a task queue which
is in line with how it's called in production.
The change is essentially around inheriting from FakeVideoCapturerWithTaskQueue
instead of FakeVideoCapturer, but also removes the dependency on rtc::MessageHandler.
Along the way I'm also updating an ortc test that uses FakePeriodicVideoCapturer
and had a bug that was masked by the fact that FakePeriodicVideoCapturer
previously used rtc::Thread::Current internally, but was being called
by the wrong thread (and there were no checks for it).
As a result, I'm also adding a bunch of checks to help with correct usage.
Bug: webrtc:8841, webrtc:8848
Change-Id: I21b710873b508ebc55f8d2e4545d862766656871
Reviewed-on: https://webrtc-review.googlesource.com/49400
Commit-Queue: Tommi <tommi@webrtc.org>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21951}
8b0ebb9484