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 3d413dc16013d6eb902bf42f692e556b25840d22..9ecf0ae5ae91876fcb852ed82a73ffad8a3d8878 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCRtpSender.mm
+++ b/webrtc/sdk/objc/Framework/Classes/RTCRtpSender.mm
@@ -21,16 +21,6 @@
   rtc::scoped_refptr<webrtc::RtpSenderInterface> _nativeRtpSender;
 }
 
-- (instancetype)initWithNativeRtpSender:
-    (rtc::scoped_refptr<webrtc::RtpSenderInterface>)nativeRtpSender {
-  NSParameterAssert(nativeRtpSender);
-  if (self = [super init]) {
-    _nativeRtpSender = nativeRtpSender;
-    RTCLogInfo(@"RTCRtpSender(%p): created sender: %@", self, self.description);
-  }
-  return self;
-}
-
 - (NSString *)senderId {
   return [NSString stringForStdString:_nativeRtpSender->id()];
 }
@@ -67,4 +57,38 @@
       self.senderId];
 }
 
+- (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 {
+  NSParameterAssert(nativeRtpSender);
+  if (self = [super init]) {
+    _nativeRtpSender = nativeRtpSender;
+    RTCLogInfo(@"RTCRtpSender(%p): created sender: %@", self, self.description);
+  }
+  return self;
+}
+
 @end