Delete VideoAdapter::AdaptFrame

This CL deletes VideoAdapter::AdaptFrame and replaces the remaining calls with AdaptFrameResolution instead.

I do not expect this CL to fix the flaky VideoAdapterTests yet. I intend to replace FileVideoCapturer with a deterministic FakeVideoCapturer in a follow-up CL.

BUG=4317
R=pbos@webrtc.org, pthatcher@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/44769004

Cr-Commit-Position: refs/heads/master@{#8848}
3 files changed