Revert "Remove extra copy in VideoCaptureImpl::IncomingFrameI420"

This reverts commit 99f9743fe39066ba93b41f2b0a417696cbbd06fb.

Revert while build breakage is fixed.

BUG=None
TBR=niklas.emblom@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/3249004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5069 4adac7df-926f-26a2-2b94-8c16560cd09d
11 files changed