Reland of Split iOS sdk in to separate targets

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

Index: webrtc/sdk/objc/Framework/Classes/PeerConnection/RTCRtpReceiver+Private.h
diff --git a/webrtc/sdk/objc/Framework/Classes/PeerConnection/RTCRtpReceiver+Private.h b/webrtc/sdk/objc/Framework/Classes/PeerConnection/RTCRtpReceiver+Private.h
new file mode 100644
index 0000000000000000000000000000000000000000..3dc0285d6b021324981ddd731b3c5062e3ad02ce
--- /dev/null
+++ b/webrtc/sdk/objc/Framework/Classes/PeerConnection/RTCRtpReceiver+Private.h
@@ -0,0 +1,45 @@
+/*
+ *  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 "WebRTC/RTCRtpReceiver.h"
+
+#include "webrtc/api/rtpreceiverinterface.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace webrtc {
+
+class RtpReceiverDelegateAdapter : public RtpReceiverObserverInterface {
+ public:
+  RtpReceiverDelegateAdapter(RTCRtpReceiver* receiver);
+
+  void OnFirstPacketReceived(cricket::MediaType media_type) override;
+
+ private:
+  __weak RTCRtpReceiver* receiver_;
+};
+
+}  // namespace webrtc
+
+@interface RTCRtpReceiver ()
+
+@property(nonatomic, readonly)
+    rtc::scoped_refptr<webrtc::RtpReceiverInterface> nativeRtpReceiver;
+
+/** Initialize an RTCRtpReceiver with a native RtpReceiverInterface. */
+- (instancetype)initWithNativeRtpReceiver:
+    (rtc::scoped_refptr<webrtc::RtpReceiverInterface>)nativeRtpReceiver
+    NS_DESIGNATED_INITIALIZER;
+
++ (RTCRtpMediaType)mediaTypeForNativeMediaType:(cricket::MediaType)nativeMediaType;
+
+@end
+
+NS_ASSUME_NONNULL_END