
Moves webrtc/common_video/rotation.h and parts of webrtc/common_video/include/video_frame_buffer.h and webrtc/video_frame.h, and adds to a new GN target api:video_frame_api. BUG=webrtc:5880 Review-Url: https://codereview.webrtc.org/2517173004 Cr-Commit-Position: refs/heads/master@{#15993}