Adding getParameters/setParameters APIs to RtpReceiver.

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

Index: webrtc/sdk/objc/Framework/Classes/RTCRtpSender.mm
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCRtpSender.mm b/webrtc/sdk/objc/Framework/Classes/RTCRtpSender.mm
index 71030029adf4005792f535e89d679fe20c591c06..4f6a3764f55136ad9cca9e2d39c37bb2f7e7d786 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCRtpSender.mm
+++ b/webrtc/sdk/objc/Framework/Classes/RTCRtpSender.mm
@@ -19,14 +19,6 @@
   rtc::scoped_refptr<webrtc::RtpSenderInterface> _nativeRtpSender;
 }
 
-- (instancetype)initWithNativeRtpSender:
-    (rtc::scoped_refptr<webrtc::RtpSenderInterface>)nativeRtpSender {
-  if (self = [super init]) {
-    _nativeRtpSender = nativeRtpSender;
-  }
-  return self;
-}
-
 - (RTCRtpParameters *)parameters {
   return [[RTCRtpParameters alloc]
       initWithNativeParameters:_nativeRtpSender->GetParameters()];
@@ -45,4 +37,36 @@
   return nil;
 }
 
+- (BOOL)isEqual:(id)object {
+  if (self == object) {
+    return YES;
+  }
+  if (object == nil) {
+    return NO;
+  }
+  if (![object isMemberOfClass:[self class]]) {
+    return NO;
+  }
+  RTCRtpSender *sender = (RTCRtpSender *)object;
+  return _nativeRtpSender == sender.nativeRtpSender;
+}
+
+- (NSUInteger)hash {
+  return (NSUInteger)_nativeRtpSender.get();
+}
+
+#pragma mark - Private
+
+- (rtc::scoped_refptr<webrtc::RtpSenderInterface>)nativeRtpSender {
+  return _nativeRtpSender;
+}
+
+- (instancetype)initWithNativeRtpSender:
+    (rtc::scoped_refptr<webrtc::RtpSenderInterface>)nativeRtpSender {
+  if (self = [super init]) {
+    _nativeRtpSender = nativeRtpSender;
+  }
+  return self;
+}
+
 @end