Don't set the priority of the decoder to 'high' on Android.

webrtc/video/video_receive_stream.cc

Index: webrtc/video/video_receive_stream.cc
diff --git a/webrtc/video/video_receive_stream.cc b/webrtc/video/video_receive_stream.cc
index eb2404c174ed749baef44638c831249a0499a415..be623cef56ade6bd4c3f60357bdc7eb47db151ad 100644
--- a/webrtc/video/video_receive_stream.cc
+++ b/webrtc/video/video_receive_stream.cc
@@ -310,7 +310,14 @@ void VideoReceiveStream::Start() {
   call_stats_->RegisterStatsObserver(video_stream_decoder_.get());
   // Start the decode thread
   decode_thread_.Start();
+#if !defined(WEBRTC_ANDROID)
+  // On android, the decoding happens on a different thread and frames
+  // are delivered on that thread (that in itself needs to be fixed).
+  // In any event, the actual decoding work is higher priority than the
+  // |decode_thread_| on Android, so we only raise the deocode priority on
+  // platforms other than Android.
   decode_thread_.SetPriority(rtc::kHighestPriority);
+#endif
   rtp_stream_receiver_.StartReceive();
 }