Adding getParameters/setParameters APIs to RtpReceiver.

webrtc/sdk/objc/Framework/Classes/RTCRtpReceiver.mm

 /*
  *  Copyright 2016 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 "RTCRtpSender+Private.h"
+#import "RTCRtpReceiver+Private.h"
 
 #import "RTCMediaStreamTrack+Private.h"
 #import "RTCRtpParameters+Private.h"
 
 #include "webrtc/api/mediastreaminterface.h"
 
-@implementation RTCRtpSender {
-  rtc::scoped_refptr<webrtc::RtpSenderInterface> _nativeRtpSender;
+@implementation RTCRtpReceiver {
+  rtc::scoped_refptr<webrtc::RtpReceiverInterface> _nativeRtpReceiver;
 }
 
-- (instancetype)initWithNativeRtpSender:
-    (rtc::scoped_refptr<webrtc::RtpSenderInterface>)nativeRtpSender {
+- (instancetype)initWithNativeRtpReceiver:
+    (rtc::scoped_refptr<webrtc::RtpReceiverInterface>)nativeRtpReceiver {
   if (self = [super init]) {
-    _nativeRtpSender = nativeRtpSender;
+    _nativeRtpReceiver = nativeRtpReceiver;
   }
   return self;
 }
 
 - (RTCRtpParameters *)parameters {
   return [[RTCRtpParameters alloc]
-      initWithNativeParameters:_nativeRtpSender->GetParameters()];
+      initWithNativeParameters:_nativeRtpReceiver->GetParameters()];
 }
 
 - (BOOL)setParameters:(RTCRtpParameters *)parameters {
-  return _nativeRtpSender->SetParameters(parameters.nativeParameters);
+  return _nativeRtpReceiver->SetParameters(parameters.nativeParameters);
 }
 
 - (RTCMediaStreamTrack *)track {
   rtc::scoped_refptr<webrtc::MediaStreamTrackInterface> nativeTrack(
-    _nativeRtpSender->track());
+    _nativeRtpReceiver->track());
   if (nativeTrack) {
     return [[RTCMediaStreamTrack alloc] initWithNativeTrack:nativeTrack];
   }
   return nil;
 }
 
 @end