Ignore Camera and Flip bits in CVO when parsing video rotation

webrtc/modules/rtp_rtcp/include/rtp_cvo.h

Index: webrtc/modules/rtp_rtcp/include/rtp_cvo.h
diff --git a/webrtc/modules/rtp_rtcp/include/rtp_cvo.h b/webrtc/modules/rtp_rtcp/include/rtp_cvo.h
index 5d5c995cd5fca94c70cf698622988ac79371e56d..b60b06e5df4fd0c7d7b2f978274735f4a33a5385 100644
--- a/webrtc/modules/rtp_rtcp/include/rtp_cvo.h
+++ b/webrtc/modules/rtp_rtcp/include/rtp_cvo.h
@@ -34,8 +34,10 @@ inline uint8_t ConvertVideoRotationToCVOByte(VideoRotation rotation) {
   return 0;
 }
 
-inline VideoRotation ConvertCVOByteToVideoRotation(uint8_t rotation) {
-  switch (rotation) {
+inline VideoRotation ConvertCVOByteToVideoRotation(uint8_t cvo_byte) {
+  // CVO byte: |0 0 0 0 C F R R|.
+  const uint8_t rotation_bits = cvo_byte & 0x3;
+  switch (rotation_bits) {
     case 0:
       return kVideoRotation_0;
     case 1: