WebRtcVideoCapturer: Remove dead code |OnIncomingCapturedEncodedFrame|
WebRtcVideoCapturer: Remove dead code |OnIncomingCapturedEncodedFrame|

The end goal except cleanup is to remove webrtc::VideoFrame.

R=mflodman@webrtc.org, pbos@webrtc.org, perkj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/36079004

Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#8393}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 640313ce4f3001411b42f6eae37294ebb6a6e7be

sippet/talk,sippet/talk,sippet/talk,dcpang/fatline-libjingle,dcpang/fatline-libjingle,dcpang/fatline-libjingle,sippet/talk,sippet/talk,dcpang/fatline-libjingle,dcpang/fatline-libjingle