Remove VideoSource.stop() and VideoSource.restart() from the Java API.

webrtc/api/android/jni/peerconnection_jni.cc

Index: webrtc/api/android/jni/peerconnection_jni.cc
diff --git a/webrtc/api/android/jni/peerconnection_jni.cc b/webrtc/api/android/jni/peerconnection_jni.cc
index 9efe037c9ff2d036976dce06c2e8029ff146a696..d1afa332c63e5b5325471d982a01fdb01d7a8f6c 100644
--- a/webrtc/api/android/jni/peerconnection_jni.cc
+++ b/webrtc/api/android/jni/peerconnection_jni.cc
@@ -2024,15 +2024,6 @@ JOW(void, VideoRenderer_nativeCopyPlane)(
   }
 }
 
-JOW(void, VideoSource_stop)(JNIEnv* jni, jclass, jlong j_p) {
-  reinterpret_cast<VideoTrackSourceInterface*>(j_p)->Stop();
-}
-
-JOW(void, VideoSource_restart)(
-    JNIEnv* jni, jclass, jlong j_p_source, jlong j_p_format) {
-  reinterpret_cast<VideoTrackSourceInterface*>(j_p_source)->Restart();
-}
-
 JOW(jstring, MediaStreamTrack_nativeId)(JNIEnv* jni, jclass, jlong j_p) {
   return JavaStringFromStdString(
       jni, reinterpret_cast<MediaStreamTrackInterface*>(j_p)->id());