ObjC style fix for injectable video codecs

webrtc/sdk/objc/Framework/Classes/PeerConnection/RTCVideoCodec+Private.h

 /*
  *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #import "WebRTC/RTCVideoCodec.h"
 
 #import "WebRTC/RTCVideoCodecH264.h"
 
 #include "webrtc/common_video/include/video_frame.h"
 #include "webrtc/media/base/codec.h"
 #include "webrtc/modules/video_coding/include/video_codec_interface.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
 /* Interfaces for converting to/from internal C++ formats. */
 @interface RTCEncodedImage ()
 
 - (instancetype)initWithNativeEncodedImage:(webrtc::EncodedImage)encodedImage;
-- (webrtc::EncodedImage)toCpp;
+- (webrtc::EncodedImage)nativeEncodedImage;
 
 @end
 
 @interface RTCVideoEncoderSettings ()
 
-- (instancetype)initWithVideoCodec:(const webrtc::VideoCodec *__nullable)videoCodec;
-- (std::unique_ptr<webrtc::VideoCodec>)toCpp;
+- (instancetype)initWithNativeVideoCodec:(const webrtc::VideoCodec *__nullable)videoCodec;
+- (std::unique_ptr<webrtc::VideoCodec>)createNativeVideoEncoderSettings;
 
 @end
 
 @interface RTCCodecSpecificInfoH264 ()
 
-- (webrtc::CodecSpecificInfo)toCpp;
+- (webrtc::CodecSpecificInfo)nativeCodecSpecificInfo;
 
 @end
 
 @interface RTCRtpFragmentationHeader ()
 
-- (instancetype)initWithFragmentationHeader:
+- (instancetype)initWithNativeFragmentationHeader:
         (const webrtc::RTPFragmentationHeader *__nullable)fragmentationHeader;
-- (std::unique_ptr<webrtc::RTPFragmentationHeader>)toCpp;
+- (std::unique_ptr<webrtc::RTPFragmentationHeader>)createNativeFragmentationHeader;
 
 @end
 
 @interface RTCVideoCodecInfo ()
 
-- (instancetype)initWithVideoCodec:(cricket::VideoCodec)videoCodec;
-- (cricket::VideoCodec)toCpp;
+- (instancetype)initWithNativeVideoCodec:(cricket::VideoCodec)videoCodec;
+- (cricket::VideoCodec)nativeVideoCodec;
 
 @end
 
 NS_ASSUME_NONNULL_END