Adding a way for a Java RtpSender to set a track without taking ownership.

talk/app/webrtc/java/jni/peerconnection_jni.cc

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 2102 matching lines @@
   size_t read = 0;
   rtc::scoped_ptr<jbyte> buffer(static_cast<jbyte*>(malloc(log_size)));
   stream->ReadAll(buffer.get(), log_size, &read, nullptr);
 
   jbyteArray result = jni->NewByteArray(read);
   jni->SetByteArrayRegion(result, 0, read, buffer.get());
 
   return result;
 }
 
-JOW(void, RtpSender_nativeSetTrack)(JNIEnv* jni,
+JOW(jboolean, RtpSender_nativeSetTrack)(JNIEnv* jni,
                                     jclass,
                                     jlong j_rtp_sender_pointer,
                                     jlong j_track_pointer) {
-  reinterpret_cast<RtpSenderInterface*>(j_rtp_sender_pointer)
+  return reinterpret_cast<RtpSenderInterface*>(j_rtp_sender_pointer)
       ->SetTrack(reinterpret_cast<MediaStreamTrackInterface*>(j_track_pointer));
 }
 
 JOW(jlong, RtpSender_nativeGetTrack)(JNIEnv* jni,
                                   jclass,
                                   jlong j_rtp_sender_pointer,
                                   jlong j_track_pointer) {
   return jlongFromPointer(
       reinterpret_cast<RtpSenderInterface*>(j_rtp_sender_pointer)
           ->track()
@@ skipping 25 matching lines @@
   return JavaStringFromStdString(
       jni,
       reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)->id());
 }
 
 JOW(void, RtpReceiver_free)(JNIEnv* jni, jclass, jlong j_rtp_receiver_pointer) {
   reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)->Release();
 }
 
 }  // namespace webrtc_jni