Update I420Buffer to new VideoFrameBuffer interface

webrtc/media/base/videocapturer.cc

Index: webrtc/media/base/videocapturer.cc
diff --git a/webrtc/media/base/videocapturer.cc b/webrtc/media/base/videocapturer.cc
index 704840b180d28b8a755408fe74025ef85350d7e7..df1eafc0d8c96bee4407de999e73d7cb85ac4f80 100644
--- a/webrtc/media/base/videocapturer.cc
+++ b/webrtc/media/base/videocapturer.cc
@@ -205,17 +205,17 @@ void VideoCapturer::OnFrame(const webrtc::VideoFrame& frame,
   if (apply_rotation_ && frame.rotation() != webrtc::kVideoRotation_0) {
     rtc::scoped_refptr<webrtc::VideoFrameBuffer> buffer(
         frame.video_frame_buffer());
-    if (buffer->native_handle()) {
-      // Sources producing native frames must handle apply_rotation
+    if (buffer->type() != webrtc::VideoFrameBuffer::Type::kI420) {
+      // Sources producing non-I420 frames must handle apply_rotation
       // themselves. But even if they do, we may occasionally end up
       // in this case, for frames in flight at the time
       // applied_rotation is set to true. In that case, we just drop
       // the frame.
-      LOG(LS_WARNING) << "Native frame requiring rotation. Discarding.";
+      LOG(LS_WARNING) << "Non-I420 frame requiring rotation. Discarding.";
       return;
     }
     broadcaster_.OnFrame(webrtc::VideoFrame(
-        webrtc::I420Buffer::Rotate(*buffer, frame.rotation()),
+        webrtc::I420Buffer::Rotate(*buffer->GetI420(), frame.rotation()),
         webrtc::kVideoRotation_0, frame.timestamp_us()));
   } else {
     broadcaster_.OnFrame(frame);