denicija d208815685 iOS/MacOS:Refactor metal rendering by extracting common implementation
in separate super class.

Included changes:
- Fix rendering on iOS to support NV12 and i420 frames
- Improve code style
- Update build targets
- Update tests

BUG=webrtc:7079

Review-Url: https://codereview.webrtc.org/2784243003
Cr-Commit-Position: refs/heads/master@{#17923}
2017-04-28 09:14:54 +00:00
..
2017-02-14 11:07:57 +00:00
2017-02-21 12:19:46 +00:00