ObjC style fix for injectable video codecs

webrtc/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodec.h

Index: webrtc/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodec.h
diff --git a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodec.h b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodec.h
index cbef6961efbdcf92c492fbd41fdb9984d8d87d4d..95b519fdc04fa07a075c4acecc297a62706daa7b 100644
--- a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodec.h
+++ b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodec.h
@@ -39,7 +39,7 @@ RTC_EXPORT
 @property(nonatomic, assign) RTCFrameType frameType;
 @property(nonatomic, assign) int rotation;
 @property(nonatomic, assign) BOOL completeFrame;
-@property(nonatomic, retain) NSNumber *qp;
+@property(nonatomic, strong) NSNumber *qp;
 
 @end
 
@@ -88,7 +88,7 @@ RTC_EXPORT
 RTC_EXPORT
 @interface RTCVideoEncoderSettings : NSObject
 
-@property(nonatomic, retain) NSString *name;
+@property(nonatomic, strong) NSString *name;
 
 @property(nonatomic, assign) unsigned short width;
 @property(nonatomic, assign) unsigned short height;