Added the JNI interface to get and set RtpParameters and the maximum bitrate limits.

webrtc/api/java/jni/classreferenceholder.cc

Index: webrtc/api/java/jni/classreferenceholder.cc
diff --git a/webrtc/api/java/jni/classreferenceholder.cc b/webrtc/api/java/jni/classreferenceholder.cc
index d6c7d567b60662758ba879a908a2992250db7dd6..0ab1ef7d29a40802bab98fdc0c57d43dc6ad498a 100644
--- a/webrtc/api/java/jni/classreferenceholder.cc
+++ b/webrtc/api/java/jni/classreferenceholder.cc
@@ -45,6 +45,7 @@ void FreeGlobalClassReferenceHolder() {
 
 ClassReferenceHolder::ClassReferenceHolder(JNIEnv* jni) {
   LoadClass(jni, "android/graphics/SurfaceTexture");
+  LoadClass(jni, "java/lang/Integer");
   LoadClass(jni, "java/nio/ByteBuffer");
   LoadClass(jni, "java/util/ArrayList");
   LoadClass(jni, "org/webrtc/AudioTrack");
@@ -83,6 +84,8 @@ ClassReferenceHolder::ClassReferenceHolder(JNIEnv* jni) {
   LoadClass(jni, "org/webrtc/PeerConnection$TcpCandidatePolicy");
   LoadClass(jni, "org/webrtc/PeerConnection$KeyType");
   LoadClass(jni, "org/webrtc/PeerConnection$SignalingState");
+  LoadClass(jni, "org/webrtc/RtpParameters");
+  LoadClass(jni, "org/webrtc/RtpParameters$Encoding");
   LoadClass(jni, "org/webrtc/RtpReceiver");
   LoadClass(jni, "org/webrtc/RtpSender");
   LoadClass(jni, "org/webrtc/SessionDescription");