Change VCMFrameBuffer and VCMEncodedFrame to use rotation from base class EncodedImage.

BUG=webrtc:5687

Review-Url: https://codereview.webrtc.org/2037633002
Cr-Original-Commit-Position: refs/heads/master@{#13376}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 414dda1a10d465ee61b0a52f036b854dc0e00739
3 files changed