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

webrtc/api/java/src/org/webrtc/RtpSender.java

 /*
  *  Copyright 2015 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.
  */
 
@@ skipping 28 matching lines @@
     }
     cachedTrack = track;
     ownsTrack = takeOwnership;
     return true;
   }
 
   public MediaStreamTrack track() {
     return cachedTrack;
   }
 
+  public boolean setParameters(RtpParameters parameters) {
+      return nativeSetParameters(nativeRtpSender, parameters);
+  }
+
+  public RtpParameters getParameters() {
+      return nativeGetParameters(nativeRtpSender);
+  }
+
   public String id() {
     return nativeId(nativeRtpSender);
   }
 
   public void dispose() {
     if (cachedTrack != null && ownsTrack) {
       cachedTrack.dispose();
     }
     free(nativeRtpSender);
   }
 
   private static native boolean nativeSetTrack(long nativeRtpSender,
                                                long nativeTrack);
 
   // This should increment the reference count of the track.
   // Will be released in dispose() or setTrack().
   private static native long nativeGetTrack(long nativeRtpSender);
 
+  private static native boolean nativeSetParameters(long nativeRtpSender, RtpParameters parameters);
+
+  private static native RtpParameters nativeGetParameters(long nativeRtpSender);
+
   private static native String nativeId(long nativeRtpSender);
 
   private static native void free(long nativeRtpSender);
 }
 ;