Clean up RTCVideoFrame

webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h

Index: webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h b/webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h
index e844d647901d19543fbf000d53b1e3a0eec91c44..a7a40386cc831029d3245e23159337aacaa7c613 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h
+++ b/webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h
@@ -11,18 +11,14 @@
 #import "WebRTC/RTCVideoFrame.h"
 
 #include "webrtc/api/video/video_frame_buffer.h"
-#include "webrtc/api/video/video_rotation.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
 @interface RTCVideoFrame ()
 
-@property(nonatomic, readonly)
-    rtc::scoped_refptr<webrtc::VideoFrameBuffer> i420Buffer;
-
 - (instancetype)initWithVideoBuffer:
                     (rtc::scoped_refptr<webrtc::VideoFrameBuffer>)videoBuffer
-                           rotation:(webrtc::VideoRotation)rotation
+                           rotation:(RTCVideoRotation)rotation
                         timeStampNs:(int64_t)timeStampNs
     NS_DESIGNATED_INITIALIZER;