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

webrtc/api/java/src/org/webrtc/RtpParameters.java

 /*
  *  Copyright 2013 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.
  */
 
 package org.webrtc;
 
+import java.util.List;
+import java.util.LinkedList;
+
 /**
- * Java wrapper for a C++ AudioSourceInterface.  Used as the source for one or
- * more {@code AudioTrack} objects.
+ * The parameters for an {@code RtpSender}, as defined in
+ * http://w3c.github.io/webrtc-pc/#rtcrtpsender-interface.
  */
-public class AudioSource extends MediaSource {
-  public AudioSource(long nativeSource) {
-    super(nativeSource);
+public class RtpParameters {
+  public static class Encoding { public Integer maxBitrateBps; }
+
+  public final LinkedList<Encoding> encodings;
+
+  public RtpParameters() {
+    encodings = new LinkedList<Encoding>();
   }
 }