Ping backup connection at a slower rate

talk/app/webrtc/peerconnectioninterface.h

Index: talk/app/webrtc/peerconnectioninterface.h
diff --git a/talk/app/webrtc/peerconnectioninterface.h b/talk/app/webrtc/peerconnectioninterface.h
index b7814e583033ac4f741c8d1b245ed14e5c12c143..c42bc590478a55f34f9bcabdb93e94428cf232ec 100644
--- a/talk/app/webrtc/peerconnectioninterface.h
+++ b/talk/app/webrtc/peerconnectioninterface.h
@@ -254,6 +254,7 @@ class PeerConnectionInterface : public rtc::RefCountInterface {
     int audio_jitter_buffer_max_packets;
     bool audio_jitter_buffer_fast_accelerate;
     int ice_connection_receiving_timeout;
+    int ice_backup_connection_ping_interval;

[pthatcher1, 2015/11/20 05:34:37]

We need to specify the unit of measure.  For example having _ms at the end of
the name.  Or at least commenting on what the unit is.  

[honghaiz3, 2015/11/20 20:10:06]

I added comments because the variable name is already pretty long. 

     ContinualGatheringPolicy continual_gathering_policy;
     std::vector<rtc::scoped_refptr<rtc::RTCCertificate>> certificates;
 
@@ -265,6 +266,7 @@ class PeerConnectionInterface : public rtc::RefCountInterface {
           audio_jitter_buffer_max_packets(kAudioJitterBufferMaxPackets),
           audio_jitter_buffer_fast_accelerate(false),
           ice_connection_receiving_timeout(kUndefined),
+          ice_backup_connection_ping_interval(kUndefined),
           continual_gathering_policy(GATHER_ONCE) {}
   };